Treehugger Raspberry Pi hack unlocks door when it hears a dog's bark [Video] Treehugger The system is called Pi -Rex, a bark-activated (note, not voice activated, but bark activated) door. Hunt states, “Sleep deprivation has been driving me mad recently

Here is the original post:
Raspberry Pi hack unlocks door when it hears a dog’s bark [Video] – Treehugger