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"The "D.C. Disloyalty Card" is a rewards card that offers customers a free drink once they've patronized all six of the area's participating independently owned coffee shops, each of which operates with an eye to ethically sourced goods. "

One YC-backed startup is betting that fingerprints and other forms of biometric identification may be the payment method of the future though. Called PayTango, they're partnering with local universities to offer a quick and easy way for students to use their fingerprints to pay instead of credit cards.

It's official: Samsung has announced the Galaxy S4 Zoom, the most powerful smartphone-camera hybrid on the market today. Check out its front side, and you'll see a device very similar to a Galaxy S4 Mini. It has a 4.3-inch qHD display, a 1.5GHz dual-core processor, 1.5GB of RAM, 8GB of storage memory (expandable via microSD cards, and a 1.9-megapixel camera. On the back, it's a full-fledged camera, with a 16-megapixel sensor and 10x optical zoom, which is far better than on any other smartphone or smartphone-camera hybrid we've seen.

NetSmartz Workshop is an interactive, educational program of the National Center for Missing & Exploited Children® (NCMEC) that provides age-appropriate resources to help teach children how to be safer on- and offline. The program is designed for children ages 5-17, parents and guardians, educators, and law enforcement. With resources such as videos, games, activity cards, and presentations, NetSmartz entertains while it educates.

"After looking for one of those "joke" worksheets to review competing the square I thought I'd try some group work (ala @druinok) via index cards.  I decided to write problems in varying degrees of difficulty... those with an "a" value, those without, those that would result in fractions, etc.  I pulled out my Sharpies to start writing and what did I discover?"

"An all-digital public library is opening today, as officials in Bexar County, Texas, celebrate the opening of the BiblioTech library. The facility offers about 10,000 free e-books for the 1.7 million residents of the county, which includes San Antonio. On its website, the Bexar County BiblioTech library explains how its patrons can access free eBooks and audio books. To read an eBook on their own device, users must have the 3M Cloud Library app, which they can link to their library card. The app includes a countdown of days a reader has to finish a book - starting with 14 days, according to My San Antonio."

"Mathematicians attempt to analyze types of interactions by treating them as games in which players use strategies to obtain payoffs. Games like checkers and chess are games of perfect information; the board shows both players all the information needed to make the right decision. Games like poker are games of imperfect information; no player has enough information (the other players' cards are hidden) to make a guaranteed right decision."

"In an interview about the satellite hack with French news program 13 Heures, TV5Monde reporter David Delos unwittingly revealed at least one password for the station's social media presence. That's because he was filmed in front of a staffer's desk-which was smothered in sticky notes and taped index cards that were covered in account usernames and passwords."

"As to the future of digital learning, Bailey predicts increasing opportunities for students to take course online or in blended learning environment, more options for state-approved online classes, and a focus on competency-based learning. "State policy can remove roadblocks to students' digital learning opportunities, Bailey said"