Police are appealing for help to identify a man who was caught on CCTV kicking in and squeezing through the door of a residential block in Barton on Monday.
Footage of the incident, which happened in Blackall Street, shows the man kick the automatic door twice with his left foot, breaking the glass with the second strike.
He then pushes the door back to create a tiny opening and spends about 15 seconds squeezing his body through the gap.
Police urged anyone with information, including the man's identity, to contact Crime Stoppers on 1800 333 000, or via the Crime Stoppers ACT website.
Information can be provided anonymously, quoting reference number 6280415.