The reason why this occurs is because in admin.swremote.com the "Work Authorization Required" and "Credit Card Authorization Required" check boxes are unchecked. Without checking these two boxes, the tech will be able to send invoices and accept payments without signatures.
How can I fix this?
In admin.swremote.com, go to the customer's account and check the boxes for "Work Authorization Required" and "Credit Card Authorization Required" to require signatures when building the invoice. It might be important to ask the office manager if credit cards should require a signature. You can also lead the office staff to the admin.swremote.com site so they can update their own information.
You can see where these signatures appear in SuccessWare21 HERE