A tiny Linux computer with a keyboard, a daylight-readable screen, and a long-range transceiver
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Just started shipping their (eyewateringly expensive) crowdsupply version
https://www.crowdsupply.com/morpheans/sharpikeeboSources and Gerbers available so you could get a couple fabbed at JLPCB or fab of your choice fairly easily
https://github.com/ccadic/sharpikeebo/tree/main/V1222I'd be inclined to run it with an open hardware replacement for the Zero such as
https://openkits.easyeda.com/project/detail/lctspi-rk3566-2g-16g
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Just started shipping their (eyewateringly expensive) crowdsupply version
https://www.crowdsupply.com/morpheans/sharpikeeboSources and Gerbers available so you could get a couple fabbed at JLPCB or fab of your choice fairly easily
https://github.com/ccadic/sharpikeebo/tree/main/V1222I'd be inclined to run it with an open hardware replacement for the Zero such as
https://openkits.easyeda.com/project/detail/lctspi-rk3566-2g-16g
Kinda looks like a blackberry.