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2. Telephone number verification - Wikipedia

   en.wikipedia.org/wiki/Telephone_number_verification

   Telephone number verification. Telephone number verification (or validation) services are online services used to establish whether a given telephone number is in service. They may include a form of Turing test to further determine if a human answers or answering equipment such as a modem, fax, voice mMail or answering machine .

3. Concatenated SMS - Wikipedia

   en.wikipedia.org/wiki/Concatenated_SMS

   Concatenated SMS. In the cellular phone industry, mobile phones and their networks sometimes support concatenated short message service (or concatenated SMS) to overcome the limitation on the number of characters that can be sent in a single SMS text message transmission (which is usually 160). Using this method, long messages are split into ...

4. SIM swap scam - Wikipedia

   en.wikipedia.org/wiki/SIM_swap_scam

   SIM swap scam. A SIM swap scam (also known as port-out scam, SIM splitting, [1] simjacking, and SIM swapping) [2] is a type of account takeover fraud that generally targets a weakness in two-factor authentication and two-step verification in which the second factor or step is a text message (SMS) or call placed to a mobile telephone.

5. Transaction authentication number - Wikipedia

   en.wikipedia.org/wiki/Transaction_authentication...

   A transaction authentication number ( TAN) is used by some online banking services as a form of single use one-time passwords (OTPs) to authorize financial transactions. TANs are a second layer of security above and beyond the traditional single-password authentication . TANs provide additional security because they act as a form of two-factor ...

6. SMS banking - Wikipedia

   en.wikipedia.org/wiki/SMS_banking

   Screenshot of a typical SMS Banking message on a mobile screen. SMS banking' is a form of mobile banking.It is a facility used by some banks or other financial institutions to send messages (also called notifications or alerts) to customers' mobile phones using SMS messaging, or a service provided by them which enables customers to perform some financial transactions using SMS.

7. Short Message service center - Wikipedia

   en.wikipedia.org/wiki/Short_message_service_center

   Short Message service center. A Short Message Service Center ( SMSC) is a network element in the mobile telephone network. Its purpose is to store, forward, convert and deliver Short Message Service (SMS) messages. The full designation of an SMSC according to 3GPP is Short Message Service - Service Center (SMS-SC).