Answer:
The person watching Lances friend typing the atm pin is an example of shoulder browsing. Lances friend should change the atm pin.
Step-by-step explanation:
Shoulder browsing is a technique that consists in looking over people's shoulder to get information like PINs and passwords. Because of this, this is what the person watching Lance's friend is doing.
Also, what Lance's friend should do is to change the pin because as the person already stole it, he can use it to withdraw the funds in his account. So, he has to change it to avoid that.