The Home Office says the tool will make it easier to identify adult migrants "attempting to game the system".
The prime minister says his government is delivering on its promise to restore control to the borders.
The Home Office says no decision has been taken on extending the Crowborough camp's use.
Roksana Lecka served 14 months of an eight-year sentence before she was deported to Poland.
It follows BBC News exposing drug gangs, money laundering, immigration crime, and ghost directors linked to shop fronts.
Frequent protests were held outside.
Children aged eight and nine returning to the UK from abroad will be able to use e-gates from 8 July.
A BBC report revealed some immigration advisers are helping asylum seekers pretend to be gay to stay in the country.
The Home Office said 802 people were brought ashore at Dover over the course of three days.
