Get HideMyAss! VPN
, PC Mag's Top 10 VPNs of 2016 for 55% off for a Limited Time
writes "Banks have long considered placing silicon transistors on currency for security purposes, but the technology was too chunky and intensive for paper bills. Now, tiny low-power organic transistors developed by German scientists could make it possible to really follow the money."
Interchangeable parts won't.