By collecting data on all passengers leaving the country, the government said it will get a clearer picture of who's leaving or staying in the UK.
"Exit checks data will help us to target people who have overstayed their visas and are in the UK illegally. For example, we can use new powers under the Immigration Act 2014 to remove their driving licences and prevent illegal overstayers from opening bank accounts," the UK Home Office said in a statement posted online.