Trident: Tamagotchi meets Barcode Battler?

Earlier this month, Preamble Corp. released Trident, a virtual pet game for camera phones.

Players feed their virtual pets by scanning QR codes. Then, in "battle mode," the pets fight with each other. In order to win a battle, players should feed thier pets the right food (or QR code) and thereby raising/strenghening the pets and collecting key items. For example, if a fight can last long, you may want to feed lots of good food before the fight.