Stockwise device check

For the CT58C scanner, the Zebra DS2278 and any reader that types like a keyboard. Press Start listening, do not touch any text field, then scan a DHL label, a UPS label, and codes 3 and 4 of the test sheet.

Read the same badge here by NFC (Android) or with a USB badge reader (Pi, PC panel). The number must be complete (7 bytes, 14 characters) and identical on every device.

By NFC

By a USB badge reader

Compare with another device

Point the back camera at a label or at the test sheet. Where Chrome has no built-in reader, the page uses zxing-wasm instead.

English voices installed on the device, a spoken sentence, and speech recognition. To check that the voice works without network, switch on airplane mode and press Speak again.

Keep the screen on

Press the button, then leave the device untouched for longer than its normal screen timeout.

Light and dark theme

Tap test (with gloves)

Write which gloves you wear, press Start, then tap each green square as it appears (20 taps).

Vibration

Scale on a cable (Web Serial)

On a PC panel or a Pi with the scale plugged in. Choose the port of the scale in the list Chrome shows.

Scale through the Pi (local network)

Address of the weight service that runs on the Pi today, for example http://192.168.1.31:8000/weight. If Chrome asks to allow access to devices on your local network, answer Allow.

Filled in automatically. Press Run speed test to compare this device with the others (a Pi 3 can take up to a minute).