Originally published on metropolis.co.jp on March 2011

This little device will let you breathe easy when you pucker up for a romantic smooch. The petite, discreet Kiss Me Meter detects gasses in your breath and stomach and indicates whether your breath is going to delight or dismay a new lover. A green heart gives the go ahead to engage in a lusty session of tongue tango, while a broken red heart indicates it’s best to cut your losses and head for the door. Somewhere in between and you might get away with a quick squirt of minty breath freshener. Though it’s designed to be worn as a cell phone accessory, this slightly embarrassing gadget is probably best relegated to the inner recesses of a ladies’ handbag.

Kiss Me Meter, ¥1,980. Available from Thanko Store Akihabara: 3-14-8 Soto Kanda, Chiyoda-ku. Tel: 03-5297-5783. www.thanko.jp