But the signature must be signed with normal writing habits, not with backhand or mouth, toes, etc. In order to avoid mistakes in handwriting identification in case of disputes.
According to the law, if the parties conclude a contract in the form of a contract, the contract will be established when both parties sign or seal it.
Legal basis:
Article 490 of the Civil Code If the parties conclude a contract in the form of a contract, the contract is established when the parties sign, seal or press their fingerprints. Before signing, sealing or fingerprinting, one party has fulfilled its main obligations, and the contract is established when the other party accepts it.
A contract shall be concluded in written form as stipulated by laws, administrative regulations or agreed by the parties. If the parties do not do this in writing, but one party has fulfilled its main obligations and the other party accepts it, the contract is established.