I dreamt that I had an authentication chip under my skin in my right palm. It had some sort of RFID proxy reader allowing me so simply wave my hand over a point of sale device in a store and automatically purchase items. I could also get entry into certain facilities with the device. It was an automated authentication device that identified me based on “something I had”, but also included loads of very personal data.
In retrospect, its kind of scary. Reminds me of the “Mark of the Beast” in Revelations or a Philip K. Dick novel.