Now in rural credit cooperatives, you need to sign two names to deposit with a passbook. The reason for this is the following：

1. signature is the authentication of the depositor's identity and the source of funds, which can effectively prevent misappropriation or fraudulent use of the depositor's identity for deposit and other operations. At the same time, signature is also a way to prove that depositors know and recognize the deposit matters, which can effectively avoid disputes arising from unclear deposit matters.

2. Signature is also one of the necessary measures for rural credit cooperatives to carry out anti-money laundering and anti-terrorist financing activities. Double signature mechanism can effectively prevent terrorists and money launderers from using deposit channels for illegal activities and protect the interests and safety of financial institutions and the public.