> For example, in a power outage, Helm won't work. I mean you can connect it to a Uninterupptible Power Supply "USP". It's not clear if they have a high power

> For example, in a power outage, Helm won't work. I mean you can connect it to a Uninterupptible Power Supply "USP". It's not clear if they have a high power USB connector to connect USB batteries, however: "Built-in battery backup for safe shutdown On mode: 10 W Standby: 0.4 W" (https://thehelm.com/pages/technology https://thehelm.com/pages/technology) > LTE backup. But then that's extra infrastructure against > the promised simplicity. There are low-cost routers with USB ports that allow plugging in an LTE stick. > Also I don't see how encryption prevents the device from > being physically destroyed. You can create a backup and store it on an untrusted storage (cloud for instance). I'm surprised these devices didn't take off 5 years ago already, as this is technology wise almost a step backwards into the 90s. But I think it's worth it, and in fact you don't need helm to set up a system like this yourself. Get a Raspi, stuff an LTE stick and a juicy USB storage into it together with external USB-battery in passthrough and you even have a superior device.