Bling creates seamless retail transactions between students and merchants.

Students at Stanford can pay for things on campus simply by tapping their mobile phones. Early last year, the university began accepting Bling, an alternative payment method that uses a proximity chip placed on the back of mobile handsets.

Bling has become more popular with students and merchants as it's more efficient and safe compared to debit cards. It eliminates the need for PINs  and signatures as the user simply taps the chip-embedded phone to a pad provided by the retailer when checking out. The fund is then automatically withdrawn from the customer's PayPal account.

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