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2. Access badge - Wikipedia

   en.wikipedia.org/wiki/Access_badge

   Access badges use various technologies to identify the holder of the badge to an access control system. The most common technologies are magnetic stripe, proximity, barcode, smart cards and various biometric devices. The magnetic stripe ID card was invented by Forrest Parry in 1960. [1] The access badge contains a number that is read by a card ...

3. QR code - Wikipedia

   en.wikipedia.org/wiki/QR_Code

   The QR code system was invented in 1994, at the Denso Wave automotive products company, in Japan. [6] [7] [8] The initial alternating-square design presented by the team of researchers, headed by Masahiro Hara, was influenced by the black counters and the white counters played on a Go board; [9] the pattern of the position detection markers was determined by finding the least-used sequence of ...

4. Digital badge - Wikipedia

   en.wikipedia.org/wiki/Digital_badge

   Download QR code; Print/export Download as PDF; Printable version; In other projects Wikimedia Commons; Wikidata item; ... Digital badges (also known as ebadges, ...

5. SnapTag - Wikipedia

   en.wikipedia.org/wiki/SnapTag

   SnapTags can be used in Google's mobile Android operating system [7] and iOS devices (iPhone/iPod/iPad) [8] using The SnapTag Reader App or third party apps that have integrated the SnapTag Reader SDK. SnapTags can also be used by standard camera phones by taking a picture of the SnapTag and texting it to the designated short code or email address.

6. Digital card - Wikipedia

   en.wikipedia.org/wiki/Digital_card

   Displaying a QR code on the customer's smartphone to the identifying host (a cashier i.e.). The unique QR code ensures privacy for every customer. Engaging an NFC protocol connection by placing the smartphone near the NFC Reader (using host card emulation method).

7. Han Xin code - Wikipedia

   en.wikipedia.org/wiki/Han_Xin_code

   Han Xin Code finder pattern. Finder Pattern [3]: 4.2.3 consists from four Position Detection Patterns located at the four corners of the barcode. The size of Position Detection Pattern is 7×7 modules and it is constructed from 5 elements: dark 7 × 7 modules, light 6 × 6 modules, dark 5 × 5 modules, light 4 × 4 modules, dark 3 × 3 modules respectively.