It has the same legal effect as the signature and seal of the contract. Moreover, fingerprints have incomparable advantages over other means, that is, they cannot be forged and the identification cost is low.
But in today's real life, unless the parties can't write, they generally don't use fingerprints alone. One of the purposes of this is to avoid the situation that someone wants to breach the contract on the grounds of "fingerprinting without knowing the contents of the contract" or "forced fingerprinting".
No matter whether you sign, seal or print, you can use it alone and make the contract effective. At this point, its legal effect is not much different. However, in order to protect their own interests to the maximum extent and avoid subsequent disputes, the most prudent choice is to combine the signature with the fingerprint. Signature can ensure the authenticity of the actor's will expression, and fingerprint can ensure the authenticity of the actor's identity. The combination of the two can complement each other and complement each other, which is the best choice to safeguard legitimate rights and interests and avoid legal risks.