India, April 30 -- A dual OTP-authentication facility has been launched in Gurugram, Nuh, Faridabad and Palwal to protect senior citizens from cybercrimes such as digital arrest and investment fraud, Haryana police officer said on Wednesday.

Police said the system, introduced by multiple private banks, allows a senior citizen to link a second mobile number of a trusted family member to their bank account. At the time of a transaction, two OTPs will be generated and sent separately to both numbers, and the transaction will be completed only after both are authenticated.

A senior Haryana police officer said the system was earlier piloted in Gurugram and Panchkula and is now being expanded. HDFC Bank is among the banks implementing the fea...