Possible to scan and to use scanned signature ins SAP?

Hi,

can anyone tell me if and how it is possible to scan and to use genuine signatures in SAP to sign documents such as purchase requisitions?

If this is possible: What is the transaction code to proceed this? In which file type do I have to save the signatures? jpg, bmp...?

As this is my first post in this forum and as I am a beginner in working with SAP MM I apologize if the question does not suite in this thread. I hope you can help me anyway. 😊

Thanks and best regards.