Coffee shop Memes

Nothing says "we don't want customers" quite like a WiFi password that requires solving a quantum mechanics problem involving Hermitian matrices, eigenvectors, and double integrals. The barista probably has a PhD and still can't remember it. Just imagine asking for the WiFi and being handed a chalkboard and told "good luck." Rumor has it three physicists are still sitting in the corner from 2018, desperately trying to connect to check their emails.