Sign a pdf using finger or stylus

I am composing a fillable pdf to book a bus.

When someone hires the bus I would like them to be able to complete the form then sign the document using a stylus or their finger (like I do when I receive deliveries).

How do I set this up in my form please?

I am using Acrobat Pro DC on Windows 10.

I do not want to use a digital signature please.

Thank you