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2. QR code - Wikipedia

   en.wikipedia.org/wiki/QR_code

   Both Android and iOS devices can natively scan QR codes without downloading an external app. The camera app is able to scan and display the kind of QR code along with the link . These devices support URL redirection, which allows QR codes to send metadata to existing applications on the device. Many free apps are available with the ability to ...

3. CamScanner - Wikipedia

   en.wikipedia.org/wiki/CamScanner

   CamScanner is a Chinese mobile app first released in 2011 that allows iOS and Android devices to be used as image scanners. It allows users to 'scan' documents (by taking a photo with the device's camera) and share the photo as either a JPEG or PDF .

4. Near-field communication - Wikipedia

   en.wikipedia.org/wiki/Near-field_communication

   HCE allows any Android 4.4 app to emulate an NFC smart card, letting users initiate transactions with their device. Apps can use a new Reader Mode to act as readers for HCE cards and other NFC-based transactions.

5. Personal digital assistant - Wikipedia

   en.wikipedia.org/wiki/Personal_digital_assistant

   EDAs often have extra features for data capture, such as barcode readers, radio-frequency identification (RFID) readers, magnetic stripe card readers, or smart card readers. These features are designed to facilitate the use of these devices to scan product or item codes. Typical applications include: Access control and security; Capital asset ...

6. Optical character recognition - Wikipedia

   en.wikipedia.org/wiki/Optical_character_recognition

   With the advent of smartphones and smartglasses, OCR can be used in internet connected mobile device applications that extract text captured using the device's camera.

7. vCard - Wikipedia

   en.wikipedia.org/wiki/VCard

   vCard, also known as VCF (Virtual Contact File), is a file format standard for electronic business cards. vCards can be attached to e-mail messages, sent via Multimedia Messaging Service (MMS), on the World Wide Web, instant messaging, NFC or through QR code.