Back in 2004, people had microchips inserted under their skin to enter their discos more quickly. https://www.newscientist.com/article/dn5022-clubbers-choose-c

Back in 2004, people had microchips inserted under their skin to enter their discos more quickly. https://www.newscientist.com/article/dn5022-clubbers-choose-chip-implants-to-jump-queues/ https://www.newscientist.com/article/dn5022-clubbers-choose-...