The head of Canberra's peak advocacy body for the ageing has encouraged elderly residents to avoid using cash, after a 100-year-old Woden man was robbed on Friday.
Police said the thief forced his way into the Farrer home at 11am, before also forcing entry into a locked bedroom where the centenarian was sitting on the bed.
The thief then took money from the man's wallet.
Council for the Ageing ACT executive director Paul Flint said while cash was often the cheapest way to pay for things, it was best not to use it.
"Minimise the amount of cash you have -- whether people see you getting it or having it or whatever, it just adds to the complexities," Mr Flint said.
"If you don't have to, don't have it."
Mr Flint said the Farrer burglary was not typical, as most burglars would not want to be seen and generally avoid residents.
"There are some that are particularly desperate and they're usually drug driven, but they tend to hit soft targets where they know there's money," he said.
"If you've got it, any sort of slip -- people ask you to pay something in cash [for example], and that discloses that you've got it."
Police said the thief was described as having short, dark, shaved hair. The elderly resident was unharmed during the incident.
Police have asked anyone with more information about the incident to contact CrimeStoppers on 1800 333 000 or via www.act.crimestoppers.com.au.
Information can be provided anonymously.
Mr Flint said the key issue for people was to not be alarmist but to do things to actually improve their security situation.