New answers tagged

2

Encrypting a physical data bus between an STM and a modem is hard, like, really hard. Unless (as @Dan mentioned) you're using a modem that supports secure connection of some sort (and we're talking about the physical wired connection in the PCB board, not the wireless connection with the server) then the only choice for that is probably having your own ...


3

I will try to answer your question without going off into the weeds. This comes down to threat modeling. The modem IC (from what you wrote) exposes an interface that doesn't allow an encrypted & authenticated connection between it and the host (MCU). Even if you attempt to secure the device/enclosure (anti-tamper measures with sensors, as a start) you ...


2

These systems use multiple antenna, not multiple distinct radios to compute angle of arrival based on time of arrival at each antenna. It's probably worth noting that these radios tend to be SDR (software defined radios) which detect signals by doing frequency analysis on a whole chuck of spectrum, rather than running to a specific frequency. This makes ToA ...


Top 50 recent answers are included