[jeffgreco]

Starbucks won't be using any Square dongles. I'd imagine there will be a small sticker at their normal POS. src: http://www.splatf.com/2012/08/starbucks-square-payments/

[ceejayoz]

Whether it's a dongle or a logo, the benefit is still essentially the same - recognition of it as a payment brand on par with Visa/Mastercard.