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Bad Piggy Bank -- an SMS-based payment system the company is still testing that will make it possible for users to pay for games without the need to register or use a credit card.

坏小子存钱罐（Bad Piggy Bank）： Rovio公司正在测试的一项基于短信服务的支付系统，用户可以使用它支付游戏而无需注册或使用信用卡。

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Some states limit the types of information that a grocery store can collect from you when you register for a loyalty card.

当你为忠诚卡而注册时，部分洲限制食品店从你那里获得的信息之种类。

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Drivers register for the test using a smart card and have to negotiate their way around a paved driving track fitted with electronic sensors.

BBC: Bribery in India: A website for whistleblowers

The vast majority of voters already have the necessary photo ID, which they need to get through airport security or register for a grocery-store savings card.

WSJ: Review & Outlook: Holder's Voter ID Fraud

For that to happen the big retail chains would have to start offering a sliding scale of discounts or other incentives to consumers at the cash register for using one card instead of another, or cash.

FORBES: DOJ Settlement With Visa Shifts Incentives War To Merchants