Is this tech or witchcraft?My door unlocked just by hovering my hand

Was helping a friend realign his front door over the weekend,and he goes "Watch this "waves his hand near the lock,and it just opens.No key,code,phone.I froze for a second and then started laughing.It honestly felt like sth straight out of sci-fi movie.He says it scans the veins in your palm,which sounds cool but also…a bit creepy?

Half of me thinks this is the future,the other half keeps hearing my grandma's voice going, "Technology's gonna lock you out one day."

Anyone else using touchless or palm-scan locks at home? Are they actually reliable long term,or just another smart-home phase?