Device field instrument · v1

SignalBench

Three live tests, run entirely on your device: how strong your cellular link is, how fast your camera locks onto a QR code, and how quickly a contactless tap goes through. Nothing is uploaded.

01
Signal & latency
02
QR scan speed
03
NFC tap speed
Module 00

Run the tests on your phone

Scan the code with your phone to open SignalBench there. Every test it finishes streams back to this screen live.

Not paired
Start a session to generate a pairing code for your phone.
Tests received
0
Modules done
0/3
Device
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    Module 01

    Cellular signal & link quality

    Reads your device's live network profile and fires repeated round-trip probes to measure real latency and jitter.

    Link up
    n/a

    Your browser doesn't expose the Network Information API — latency probes below still work.

    Downlink est.
    --Mbps
    Browser RTT
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    Avg latency
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    Best
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    Jitter
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    Probe history
    no samples yet
    Module 02

    QR scan speed

    Point the camera at any QR code. The clock starts the moment the camera opens and stops on the first successful decode.

    Idle
    Camera preview appears here
    Fastest
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    Average
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    Runs
    0
      Module 03

      NFC payment speed

      Times a full contactless transaction: how long your phone takes to detect and read the tag, plus the authorisation leg.

      Checking
      Ready

      Hold a contactless card or tag against the back of your phone.

      Fastest txn
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      Average
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      Avg read
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