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Straight answers about the FidusCheck One device, pre-orders, testing tips, platform features, scan records and the capabilities.
Availability, packages, payment options, trade-in credit and what happens before shipping.
The device, swappable tips, accessories, updates, charging, cases and everyday use.
Libraries, scan history, shareable results, marketplace features and online accounts.
How testing works, what results mean, confidence scoring and where the limits are.
Questions about ordering, pre-orders, payment methods, packages, delivery timing and what happens before the first units are ready to ship.
FidusCheck is currently in pre-order because the product is moving through the final stages before release, including manufacturing setup, aluminium casing, certification work, firmware refinement, testing and package preparation.
Pre-orders help fund these final stages while allowing early customers to secure the current launch pricing before full release.
FidusCheck One is currently available for pre-order. The product is still in development and the first units are planned to ship after final manufacturing setup, testing and certification work are completed.
The product pages will show the latest availability, package options and expected shipping phase. Expected to ship Q4 2026.
The current target is for the first units to ship once the final production version has completed the required checks, certification and manufacturing setup. The expected shipping phase will be shown on the product page and updated if anything changes. Expected Q4 2026.
Because this is a pre-order, timings can move if certification, parts, casing or production testing take longer than expected.
The first pre-order run is limited to 100 units.
The aim is to keep the first run controlled so the launch can be managed properly.
You can pre-order through the FidusCheck website by choosing the package you want, adding it to your basket and checking out as normal.
If you need help choosing a package, want to pay manually, or want to use precious metals as trade-in credit, contact us before ordering and we can help set it up.
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In most cases, yes. If your order has not yet been prepared or shipped, contact us and we can usually help upgrade or adjust your package.
If the change affects the price, we will confirm the difference before making any changes.
Yes. FidusCheck is suitable for private users as well as jewellers, bullion dealers, pawnbrokers, coin shops, precious metal buyers and other businesses that regularly handle valuable items.
If you need a manual invoice, larger order or business support, contact us and we can help.
Yes. FidusCheck accepts selected precious metals as trade-in credit, including bullion, coins and scrap.
Trade-in metals are useful because they help build testing libraries, calibration data and real-world sample sets. If you want to pay this way, contact us before ordering so we can confirm the metal, value and process.
The metals received through trade-ins are used for further testing, calibration, research and building item libraries.
A wider mix of coins, bars, scrap and jewellery gives FidusCheck more real-world data to work with, which helps improve the system over time.
Yes, bank transfer may be available for manual orders. Contact us if you would prefer to order this way and we can help set everything up for you.
No. Pre-order pricing is intended as an early launch offer and may be lower than the final retail price. Package pricing, discounts and included extras may change after the pre-order period.
If there is a meaningful delay, updates will be shared with customers and regular updates are shared on the FidusCheck Facebook page. Delays can happen with new hardware because casing, electronics, certification, firmware and packaging all need to come together before shipping.
The aim is to ship a reliable product rather than rush out an unfinished device.
Pre-order cancellation rights and refund rules may depend on the timing, order status and the terms that apply at the time of purchase.
Please check the terms and returns information on the website, or contact us with your order details if you need help.
Yes. Feedback from early users, dealers, jewellers, pawnbrokers, collectors and testers will help improve the device, firmware, libraries and platform features.
FidusCheck is being built around real-world use, not just lab-style examples.
Questions about the FidusCheck One device, swappable testing tips, accessories, charging, firmware updates and what is included with each package.
FidusCheck One is a portable precious metal and gemstone testing device with interchangeable testing tips. It is designed to help screen coins, bullion, jewellery, scrap metals and gemstones using guided results and item libraries.
The aim is to sit between basic tools like magnets and acid tests, and expensive bench-top machines that many users cannot cost justify or carry around with them.
FidusCheck is built around swappable magnetic testing tips. The main planned tip types include inductive tips for coins and bullion, resistive tips for metal surface and purity-style checks, and a gem testing tip for diamond and gemstone screening.
Different packages include different combinations of tips and accessories.
The inductive tips are for metal, coin and bullion screening. They are designed to read how an item responds to magnetic fields, which can help compare coins, bars and bullion against expected profiles.
Different inductive tips are being developed for different item sizes and testing depths.
The resistive tip is designed for direct contact metal checks. It can help compare surface resistance and conductivity behaviour against known metal values and purities.
This makes it useful for jewellery, scrap, exposed metal and situations where surface behaviour is part of the test.
The gem tip is designed for gemstone screening using thermal and electrical conductivity. These measurements can help separate stones such as diamond, moissanite and cubic zirconia, and may also help screen other gemstones depending on the stone and test mode.
There is also a 365nm and high CRI white LED on the device for further inspection and fluorescence tests.
No. The inductive tips are for metal, coin, jewellery and bullion screening only. Gemstone testing is handled by the dedicated gem testing tip.
The ferrite testing mat helps reduce interference from metal objects underneath or near the item being tested.
Inductive testing uses magnetic fields, so nearby metal surfaces, desks, trays or tools can affect readings. The mat helps create a more controlled testing area.
Not always, but it is recommended for best results, especially when testing on unknown surfaces or near other metal objects.
Without the mat, the device may still work, but readings can be affected by the surface underneath the item.
Yes. The packages include a case and accessories. The exact contents depend on the package selected.
The aim is to make the system portable and practical for collectors, dealers, jewellers and people who need to test away from a desk.
Yes, the device uses USB-C for charging and connection and is compatible with dumb and smart/PD USB-C chargers.
FidusCheck One is designed as a rechargeable handheld device rather than a tester that relies on disposable batteries. Final battery and charging details will be confirmed before shipping.
The best package depends on what you plan to test.
The Starter package is best for users who want the main device and key everyday testing tips.
The Pro package is better for users who want a wider range of testing options.
The Dealer package is designed for higher-volume and professional users who need the most flexible setup.
Yes, the system is being designed so more tips and accessories can be added over time. Availability will depend on final production, stock and which tips are released first.
Yes. More testing tips are planned. This includes further jewellery-focused development and other specialist tips for different testing needs.
Yes. Firmware updates are planned so the device can improve over time. Updates may refine testing modes, improve accuracy, add features and expand support for libraries and item profiles.
Yes. FidusCheck will have support available for customers, along with help guides, FAQs and troubleshooting resources on the website.
The aim is to make the device practical for real users, not just technically capable.
Yes. FidusCheck is being designed to give guided results so users do not need to manually interpret every raw reading.
More experienced users should still be able to view useful detail, but the goal is to keep everyday testing simple enough for collectors, buyers and small businesses.
Yes. The device is being designed to perform checks on-device. Online features are intended to add extra value through scan history, library updates, account features, backups and shareable records.
Questions about FidusCheck libraries, accounts, scan history, shareable test records, marketplace features and how the online side connects with the device.
Libraries are collections of known item profiles. These profiles can contain expected readings for coins, bars and other items so the device can compare a test result against a known reference.
The goal is to make testing more guided and consistent, especially for common coins, bullion and supported item types.
For the most guided result, you would usually select the item, metal type or profile you are testing against. This allows the device to compare the reading with expected behaviour.
There may also be more general test modes for known metals or unknown items, but item-specific profiles give the clearest comparison where supported.
Yes. FidusCheck is being built with scan history and saved test records in mind. This should help users keep a record of what was tested, when it was tested and what the result showed.
Yes. FidusCheck is being built with shareable scan results so sellers can show evidence of a test rather than simply saying an item has been tested.
These records are intended to support trust, but they should not be treated as an absolute guarantee of authenticity.
The marketplace is designed to give precious metal buyers and sellers a more trusted place to list items, attach test results and build reputation.
The aim is to improve confidence when buying and selling, especially where items are being sold online or through community groups.
No. FidusCheck is designed to support existing communities, not replace them.
Sellers can still post in Facebook groups, but use FidusCheck profiles, scan records and marketplace-style tools to give buyers more confidence.
Yes. Not every scan needs to be public or attached to a listing. The platform is being designed so users can keep private records, build their own history and choose when a result should be shared.
Yes. Library updates are one of the main reasons the platform exists. As more items are tested and more profiles are refined, the supported library can improve over time.
Updates may include new coins, bars, packaging states, testing modes and profile refinements.
This is part of the long-term plan. Real-world scans from trusted users can help improve item profiles, spot patterns and expand coverage.
Libraries have their own reviews and ratings too so users can rate each others testing libraries.
FidusCheck will also be actively testing user submitted libraries for authenticity, and will receive the FidusCheck Verified badge once approved.
No. FidusCheck is being designed to perform checks on the device. Cloud features are intended to add extra value through scan history, backups, library updates, shareable records and marketplace tools.
Yes. A saved scan history can help show that an item has been checked and give buyers more information before purchase.
It is not a guarantee, but it can support trust when combined with seller reputation, clear photos and sensible buying checks.
Yes the FidusCheck platform is built to be used by collectors and Businesses.
Business-friendly features are planned with some features already live, especially for dealers, jewellers, pawnbrokers and higher-volume users. This may include better record keeping, scan history, item management and seller reputation tools.
Questions about how FidusCheck screens items, what the readings mean, what it can help detect and where professional judgement or lab testing may still be needed.
No. FidusCheck One does not use XRF.
It uses inductive testing, resistive testing and gemstone testing.
XRF is a different technology used to analyse elemental composition.
However, a smaller and more affordable XRF-style product is part of the long-term development plan and is a later release, but it is not what FidusCheck One currently is.
Sigma-style testers use inductive testing to check coins and bullion. FidusCheck also uses inductive testing but using much newer and advanced tech than Sigma (we've had to invent it from the ground up and file for a patent!), we also have swappable tips, adjustable testing modes and a wide public and community platform around libraries, scan records and online tools.
The aim is to build a more flexible testing system for modern precious metal trading.
Kee-style testers are mainly used for surface testing and metal purity checks.
FidusCheck includes resistive testing tips and are designed to check surface behaviour against known metal values and purities, FidusCheck tips also uses 4-wire kelvin to vastly improve accuracy compared to Kee-style testers.
FidusCheck is designed to be more portable, more versatile and more modern than many existing testers. It combines multiple testing methods with the latest technology into one system and connects with libraries, scan history and platform tools.
Something that hasn't yet existed until FidusCheck.
No. FidusCheck helps screen and assess items, but no handheld tester can guarantee authenticity in every situation.
It is designed to reduce risk, identify suspicious behaviour and support better decisions, not replace professional judgement, provenance checks or laboratory testing for high-value or disputed items.
No. FidusCheck is designed as a portable powerful screening and verification aid, not a replacement for certified laboratory analysis.
It can help identify suspicious behaviour and support better decisions, but high-value, disputed, legal or insurance-sensitive items may still require further professional testing.
Yes. The inductive tips are designed to test into coins and bullion rather than only checking the surface. Different tips are being developed for different item sizes and testing depths.
This can help detect some issues that surface-only checks like XRF and Kee-style testers often miss.
Testing depth depends on the inductive tip being used, the item being tested, the material, the frequency range and the selected test mode.
Current tip development includes smaller tips for coins and jewellery, deeper tips for thicker items and bullion-focused tips for larger bars. Final depth guidance will be confirmed after production testing.
Yes, larger bullion testing is one of the planned use cases. For larger bars, the Bullion or Deep inductive tips are the most suitable options.
These tips are intended to give a deeper response than small coin tips, but testing depth and confidence will still depend on the size, material, shape and construction of the bar.
FidusCheck is designed to help screen for suspicious bars, including items that may contain unusual cores, layered construction or material behaviour that does not match the expected profile.
FidusCheck is being designed to help identify material behaviour that does not match the expected profile for a genuine item. That can include some filled, layered or unusual-core counterfeits.
For tungsten cores you would use the appropriate Inductive tip size for the item to test this.
FidusCheck is designed to help detect plated or suspicious items by combining surface and deeper testing.
The resistive tip checks surface behaviour, while the inductive tips can help compare deeper material response. If the surface and deeper readings do not match what is expected, that can be a warning sign.
Not always. FidusCheck can help show when an item does not match the expected reading for a genuine item, and the resistive tip can help estimate surface behaviour against known metals and purities.
Identifying the exact internal material may still require further testing, cutting, assay, XRF or laboratory analysis.
Yes, this is planned through the library system.
For supported library items, profiles can include expected readings for both bare items and protected items, such as coins in capsules, cases or TEP-style packaging. The result depends on the packaging material, thickness and the item profile being used.
Yes. FidusCheck is being developed to test jewellery using the resistive tips and suitable inductive tips where appropriate.
Jewellery can be more complex than coins because of shape, solder, stones, plating, hollow sections and mixed parts, so results should be interpreted carefully.
Yes. The resistive testing tip is designed to help test surface conductivity and resistance against known metal values and purities, making it useful for scrap gold, silver and other exposed metals.
For scrap, shape and surface condition matter, so clean contact and sensible testing practice are important.
FidusCheck is being built to support a wide range of gold and silver coins through its library system. Common coins can have known profiles that the device can compare against.
Less common items may still be tested in a more general way, but the best guided results will come from the ever growing supported profiles.
Yes. FidusCheck is designed for coins, bars and bullion. Smaller bars may work with standard inductive tips, while larger bars will usually need the Deep or Bullion tips for better response.
Yes. The gem testing tip is designed to measure thermal and electrical conductivity. These two measurements can help separate common stones such as diamond, moissanite and cubic zirconia. It can also detect other stone and gem types and will over time have more gem types supported via firmware updates as we test and approve more capabilities.
Yes, this is one of the main uses of the gem testing tip. Diamond, moissanite and cubic zirconia behave differently under thermal and electrical conductivity tests, so combining both measurements helps separate them more reliably than thermal testing alone.
Not reliably at this stage, but we are working on it. If we succeed we will be the first to do this using this method and it will be available over a firmware update.
Usually, Natural and lab-grown diamonds can have very similar thermal and electrical conductivity, so separating them usually requires specialist testing such as spectroscopy, photoluminescence, UV fluorescence analysis, growth-pattern inspection or laboratory equipment designed for natural versus synthetic diamond screening.
The gem tip may be able to help screen and compare a wider range of gemstones using thermal and electrical conductivity, but the strongest initial use case is separating diamond, moissanite and cubic zirconia.
For coloured gemstones such as sapphire, ruby and emerald, results may be useful as part of a broader screening process, but they should not be treated as a full gemmological identification.
FidusCheck is designed as a non-destructive screening tool. Inductive testing does not require acid, filing or scratching.
Resistive testing requires direct contact with the surface, so the item should be handled carefully and the correct tip should be used. Valuable, fragile or proof-finish items should always be treated with extra care.
A test can compare the item against a selected profile or metal type. The device then gives feedback based on how closely the reading matches what is expected across the multiple data points it gathers during the test.
Depending on the mode, this may include guided feedback, confidence-style scoring, warnings for unusual readings and extra detail for more experienced users.
A confidence score is intended to show how closely the result matches the expected profile for the selected item or material and is an overall score taking all of its results into account.
A high score supports the item matching the selected profile, while a low or unusual result suggests further checks are needed. It should not be read as an absolute guarantee of authenticity.
Basic checks can be useful, but they only tell part of the story. A fake item can match weight, size or appearance, and acid testing can be messy, destructive or limited to the surface.
FidusCheck is designed to give a cleaner, faster and broader screening process by combining multiple test types and guided comparison data.
For some tests, yes, but best practice is to test on a clean, stable and controlled surface where possible.
When using inductive testing, nearby metal objects or wearable jewellery such as rings and watches, movement and the surface underneath can all affect readings, so a stable setup gives better results.
Still got a question? Head to the contact page and send the details over. We’ll keep adding the most common answers here as FidusCheck moves through pre-order, testing and launch.
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