This little robot acts as a personal assistant that keeps tabs on the things you take with you in the morning. You can tag your essentials like wallet, keys, cellphone, etc. with tiny RFID tags which provide communication range of a few inches. A pressure sensor detects your presence and the robot will ask you for a quick check of your bag. It will check for the tagged items once you bring your bag close to the reader. In case anything is missing the Robot will alert you by saying "You forgot the keys," and so on. This device has proven to be extremely effective in the normal living environment.
RFID-based Alert when you leave home [RFID in Japan]