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SSH on a pocket e-ink reader

x4ssh turns the Xteink X4 into a terminal. Pair a Bluetooth keyboard and log in to your machines.

Download firmware.bin, 1.8 MB

Needs CrossPoint on the X4 and a Bluetooth LE keyboard.

Meet the snail

SSH is a secure shell, and e-ink takes its time.

The boot screen: the snail holds a dish over the words XTEINK SSH — Looking for Wi-Fi at boot

The sleep screen: the snail asleep over the words press power to wake — Asleep, with the power off

x4> pair

Pair a Bluetooth LE keyboard from the prompt. It reconnects on boot.
x4> key

An ed25519 key made on the device at first boot. It never leaves, and passwords work too.
x4> ssh

Host keys are saved on first connect, and a changed key is refused.

Install from the SD card

Copy firmware.bin to your SD card
Put the card in the X4
Open Settings → System → SD Card Firmware Update

To go back, type crosspoint at the prompt. The SD update is new and not yet tried on a device: if it fails, flash over USB.