Tap it, and your phone’s default browser will open the webpage. If the QR code holds a URL, your phone will present you with the URL. When you scan a QR code, the QR reader in your phone’s camera deciphers the code, and the resulting information triggers an action on your phone. QR codes are most often used to store web links however, they can store arbitrary data, such as text or images.
#COLORCROSS QR CODE FOR ANDROID#
QR code scanning is built into many camera apps for Android and iOS. QR codes are designed to be scanned using a camera, such as those found on your smartphone. Even if part of the bar code is destroyed or obscured, it is still possible for a device to read the product ID.
Critically, data stored in bar codes is redundant. At the store, bar codes record the set of numbers that specify a product’s ID. Bar codes encode alphanumeric data as a series of black and white lines of various widths. While it is easy for people to read Arabic numerals, it is hard for a computer. That extra amount of data is what makes QR codes so versatile. QR codes store information in both vertical and horizontal axes, which allows them to hold significantly more data. QR codes are a close cousin of the bar codes on product packaging that cashiers scan with infrared scanners to let the checkout computer know what products are being purchased.īar codes store information along one axis, horizontally. QR codes have a wide range of uses that help people avoid contact with objects and close interactions with other people, including for sharing restaurant menus, email list sign-ups, car and home sales information, and checking in and out of medical and professional appointments. Among the many changes brought about by the pandemic is the widespread use of QR codes, graphical representations of digital data that can be printed and later scanned by a smartphone or other device.
0 kommentar(er)
