If you think Apple's fingerprint scanners are futuristic, wait until you read about the security measures one PayPal executive is excited about. He thinks businesses will start using injectable chips and pills you can swallow to secure all of your accounts.
These devices include brain implants and attachable computers, which “put users in charge of their own security,” [global head of developer evangelism Jonathan Leblanc] said. Ingestible devices could be powered by stomach acid, which will run their batteries, he added.
These new gadgets would turn unique markers in your body like vein features or your heart's electrical activity into passwords. They could transmit that encrypted data using wireless antennas to unlock your accounts. This makes them more accurate and secure than fingerprint scanners, because even those can be hacked.