With an inexpensive Raspberry Pi, you can add wireless Android Auto to older cars - ones that require a wired connection to your phone. This $15 Raspberry Pi hack fixed my car's Android Auto annoyance ...

The RFID chips used in credit cards, thankfully, are passive RFID tags, so the chip has to be close enough — usually four to six inches — from the RFID reader for it to pick it up. If you think the ...