It is legal to sign on behalf of others, but it is illegal to sign on behalf of others. If you entrust others to sign on behalf of the client, it is legal and there is no risk. If you sign on behalf of others, it may constitute fraud.

When applying for handwriting identification, the fee will generally be between 800 yuan and 2000, and the specific charging standard and amount will be determined according to the regulations of each province. Therefore, when identifying handwriting traces and time, the parties need to submit inspection materials and samples to the judicial authentication organ, and handwriting authentication will also determine whether it belongs to the parties' handwriting according to their writing habits and handwriting traces.