No longer do you need to carry around your key fob, your ID, your credit card, your company access card, your glucose reader, your flash drive, or wear your fitbit. THiNK smart tattoo replaces all of that. This beautiful sub-dermal "tattoo" is comprised of nanoparticle ink, an RFID chip and 'electronic skin,' consisting of 'sensors, transistors, frequency capacitors, wireless antennas and even solar cells to power the patch (1).'