Sometimes an attacker me simply steal or take a computer or device. Computers can by physically attached to furniture or the building to prevent it being stolen. K Locks are a common way to attach laptops, which are easier to steal, to furniture such as tables. Some types of computers, such as servers, might be attached a rack which can be physically bolted to the floor to prevent them from being taken.
Organisations can also put additional physical barriers in place such as locked doors, electronic key card doors, or doors which operate with NFC to prevent unauthorised people accessing computers which contain confidential or personal data.