Neat tamper-evidence packaging concept: a random pattern of beads that's modified when you open the package, along with a smartphone app to automatically verify the pattern is correct.
Reusable glitter basically: to fake a seal, you need to make the significant effort of positioning each bead in the right place. Possible. But very time consuming.
I'd buy one!
@pete I wonder how easy it is to open & close the thing without disturbing the pattern if you are slow & careful enough.
