Syuzi @ Fashioning Technology writes:

A fun, whimsical project by the folks at Smart Design’s Interaction Lab, Apron Alert is a wearable that tweets when a meal is being prepared and when it’s ready. The project was an experiment around “improving the communal kitchen experience.”

Prototyped using a Lilypad Arduino and an X-Bee, the “Smart” Apron uses a magnetic clasp as the input when the apron is being worn and taken off. The design of the project is nicely illustrated in the graphic below.