Capturing Electronic Signatures on a mobile phone when completing a smartsheet form

Hi

I have a few Smartsheet forms (such as a site induction form) which work really well with capturing data etc., however I also need to capture a signature from employees to confirm that they have read and approved the content of the form. Are there any apps, other than DocuSign that can do this or, in fact, any other way of capturing proof/signatures?

Many thanks

Answers