Yes - you do this with CheckPoint. Set up a tablet at the workplace and tell employees that's where they should start and stop their time.
The time export includes a column showing whether each registration was made on CheckPoint or the webapp. The rule is:
Especially in the first few weeks, it's a good idea to keep an eye on the column. That way you can identify employees who are using their phone and remind them that CheckPoint is the rule at your workplace.