Test it before you pay.
The seller says it works. TestPass sends a short, guided test to the actual device — the seller taps one link, no account, no install, about one to two minutes — and reports only what the evidence supports.
Send the link
One link to the seller — no account for them, nothing to install.
They run the test
A short, guided test on the actual device, right in their phone's camera. About one to two minutes.
You get the verdict
A plain-language DEMONSTRATED, INCONCLUSIVE, or FAILED — with the evidence attached, not just an opinion.
Pick what you're buying
Nintendo Switch
Controller drift & calibration, tested live on the console.
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MODEL-DEPENDENTGoPro
Direct connection to the camera: identity, battery, storage, fresh capture.
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EXPERIMENTALDJI Drone
Account-binding & battery/warning evidence straight from the DJI app on the seller's own phone.
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EXPERIMENTALDigicam
Optical zoom, proven with a fresh one-time test shot — not a stock photo.
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EXPERIMENTALEpson Photo Printer
Print-head health, proven with the printer's own nozzle-check pattern, printed live on camera.
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EXPERIMENTALXbox Series X/S
Console-ban risk check: fresh identity code + current Microsoft Store access.
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EXPERIMENTALSteam Deck
Thumbstick drift, tested live with Steam's own built-in calibration screen.
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MODEL-DEPENDENTMeta Quest
Account-lock risk check: device-info screenshot + current Quest Store access, all on one phone.
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EXPERIMENTALSynology NAS
Drive-health check: the NAS's own official Healthy/Warning/Critical report, proven fresh.
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EXPERIMENTAL3D Printer
Mechanical health, proven live while the printer's own Selftest is actually running.
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EXPERIMENTALProjector
Dead pixels & panel defects, checked with the projector's own built-in test pattern — never a lumen claim.
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EXPERIMENTALROG Ally
Stick & trigger drift, tested live with ASUS's own built-in calibration screen.
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MODEL-DEPENDENTWhat a result looks like
What was tested
Analog stick calibration, both sticks
What TestPass observed
Both stick indicators moved smoothly through their full range in every frame, with no drift at rest.
Demonstrated
Example shown for illustration — not a real session.
Bought locally instead of shipped?
For a meetup purchase you can inspect the device yourself — TestPass is built first for shipped, pay-before-inspection purchases, where the decision has to happen before you ever hold the device.