Do those RFID shielded wallets and bags actually work to protect your contactless credit cards?
Systems like VISA PayWave and Mastercard PayPass.
Does aluminium foil work?
Dave does some measurements to find out using a H-Field probe
TekBox EMC probe set
Easy repair and teardown of the rather obscure Tektronix DMM916 Multimeter. Ebay auction: https://www.ebay.com.au/itm/225848873343 Forum: …