A Japanese lingerie brand has produced a bra designed to stop women from being too 'hasty' in their romantic liaisons and to deter unwanted suitors.
Tokyo-based Ravijour has worked together with engineers to produce a bra which they claim will only unlock when the wearer is truly in love.
The True Love Tester, as it is called, uses sensors and a special gadget linked to a mobile device to analyze the pattern and speed of the user's heartbeat in the heat of the moment, The Japan Times reported Thursday.
A promotional video on the firm's website shows how the sensors are fitted inside the bra cups, which send a wireless signal to a smart phone.
The app studies the heart's changing pattern and the duration of the change, which the makers say allows it distinguish between activities ranging from jogging to flirting.
(Read More: Bra designed with algorithms to hit stores)