Here’s an alternate use for your Poken: use it to detect 125 kHz RFID readers. Its led will blink red when you bring it next to a LF RFID reader (125 kHz). It will not react with a 13.56 MHz reader; and I haven’t tested with a 134.2 kHz reader.
So, I’m trying to sleep but I’m hearing people talk on the other side of the hotelroom wall. But it is an outer wal… twitter.com/i/web/status/1…2 days ago