Have legal effect. Tencent's electronic IOU is a tool for signing loan agreements online. After real-name authentication, users can fill in the loan agreement online and sign it with other users. This electronic way of signing the loan slip is convenient and fast, and it does not need to be signed in person, which greatly improves the efficiency of the loan process. According to "Electronic Signature Law of People's Republic of China (PRC)", electronic signature refers to the data contained in the data message in electronic form, accompanied by data used to identify the identity of the signer and show that the signer approves the content. Therefore, Tencent Electronic IOU, as an electronic signature, has legal effect.