We can open this contract law. It is clearly stipulated in the contract law that when signing a contract, such signature and seal or fingerprints have the same legal effect. For individuals, there is no need to stamp, just press the handprint. If you don't sign, you can directly press the fingerprint. If you sign, you don't need to press your fingerprints.
In practice, many people have written some transfer contracts or some agreements, and generally do not need personal seal, but only need to sign, which can have this legal effect. If you don't know, you can search through the internet to find out the elements of the relevant agreement and whether it is effective or not. If you really don't understand, you can go to some law firms to consult some relevant lawyers. Generally speaking, after reading the agreement, you will basically know how to deal with it and whether the agreement or contract is valid.
But when we write a contract, we must clearly write the format, such as the name, address, information and identity card information of the parties. If at the time of writing this contract, there is only our name but no ID card information, no address or missing identity information, it is likely to lead to the invalidity of the contract.