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2. Digital signature - Wikipedia

   en.wikipedia.org/wiki/Digital_signature

   A digital signature is a mathematical scheme for verifying the authenticity of digital messages or documents. A valid digital signature on a message gives a recipient confidence that the message came from a sender known to the recipient. [1] [2]

3. Signature recognition - Wikipedia

   en.wikipedia.org/wiki/Signature_recognition

   Signature recognition is an example of behavioral biometrics that identifies a person based on their handwriting. It can be operated in two different ways: Static: In this mode, users write their signature on paper, and after the writing is complete, it is digitized through an optical scanner or a camera to turn the signature image into bits. [1]

4. Image conversion - Wikipedia

   en.wikipedia.org/wiki/Image_conversion

   More expensive digital cameras usually offer the option to shoot in Raw image format. RAW is not a standardized format, in fact, RAW-formats even differ between camera models from the same vendor [citation needed]. Data in a RAW-file is structured according to the Bayer filter's pattern in cameras that use a single image sensor.

5. What are receipt scanning apps and how can you use them? - AOL

   www.aol.com/finance/receipt-scanning-apps-them...

   Retrieve and organize your digital data: The app will store your scanned documents, allowing you to search and categorize them using filters or keywords. Common uses for receipt-scanning apps

6. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

7. Image scanner - Wikipedia

   en.wikipedia.org/wiki/Image_scanner

   An image scanner (often abbreviated to just scanner) is a device that optically scans images, printed text, handwriting, or an object and converts it to a digital image. The most common type of scanner used in the home and the office is the flatbed scanner , where the document is placed on a glass bed.