Concept

This is a cookie jar which can help people eat fewer cookies. Users can get cookies from it 5 times a day. The cookie jar will open the lid automatically for users before users run out of their opportunities. Then after the opportunities run out, when users attempt to get some cookies again, the jar will not open the lid. And once the level of cookies becomes lower and below the designated level, the jar will not open its lid automatically even if there are opportunities left for users on this day.