CAPTCHA

• It stands for the Completely Automated Public Turing test to tell Computers and Humans Apart.
• CAPTCHAsare tools you can use to differentiate between real users and automated users, such as bots.
• A text in picture format is shown on a certain web page and you are asked to enter the same text in a text box. Such text shown in picture format is known asCaptcha

OTP

• It stands for one-time password is a digit numericalcodesent in real-time as SMS toyourregistered mobilenumberwhile performingthetransaction.
• OTPis mandatory for authorizingthefollowing transactions: Registration of beneficiary bank accounts of other banks. Bill payments

QR Code

• QR code stands for“Quick Response” code.While they may look simpleQR codesare actually capable of storing lots of data.
• EveryQR codeconsists of a number of black squares and dots which represent certain pieces of information.

• Link or hyperlink computing, a hyperlink, or simply a link, is a reference to data that the user can follow by clicking or tapping.
• A hyperlink points to a whole document or to a specific element within a document. Hypertext is text with hyperlinks.