Forget typing. A contact management app from Evernote called Hello combines an excellent text recognition engine with your smartphone or tablet camera and GPS system to make entering a new contact as simple as snapping a picture of their business card, truck sign—even handwriting on a scrap of paper.

Hello creates a note, logs the location, date, and time of your initial meeting, and builds the contact’s background record by scouring Facebook, LinkedIn, and Twitter for more details (with your permission, of course). A feature called Hello Connect uses audio tones to automatically detect the devices of other Hello users nearby, providing an...

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