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"Many shops that use Square readers still have to accept checks and gift cards, but they haven't had an easy time reconciling those physical payments with the digital variety. Thankfully, updated versions of Square for Android and iOS should bring harmony by recording and tracking payments in virtually any format. The new release is particularly friendly to iPads serving as registers, giving them both cash management tools and support for printing receipts over Bluetooth. Storeowners whose sales still involve lots of paper or plastic will want to grab the latest Square apps through the source links."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.engadget.com/2013/08/05/square-app-now-records-and-tracks-all-payments/>