Police are urging residents to lock up to avoid burglaries while they're at home Queensland police have warned residents against complacency over security as more and more burglars strike while people are at home. HIDE your keys and garage remote, and always lock the front door when you're home - that's the warning from Queensland's crime fighters. While armed robberies targeting businesses are on the rise in parts of Queensland, police are also warning home owners to protect their property. Many burglaries happen when people are at home, with criminals slipping through doors and windows left unlocked by residents believing they are safe. "A lot of sneak break and enters happen when people are at home," Senior Constable Sandi Trembath said. She said thieves moving between suburbs were targeting handbags, wallets, jewellery and car keys. Snr Constable Trembath said stolen keys gave thieves a free pass to return for more the next day. "In many cases if they find your keys they will steal your car," Snr Constable Trembath said. If they have your car keys they can normally return to your house and break in as the majority of people have their house key on their key ring. Police figures show a 12 per cent increase in unlawful entry of homes from 2010-11 to 2011-12. Only 24 per cent of break and enter offences were solved, although police said investigations could take over a year to complete. Crime Prevention Co-Ordinator Senior Sergeant Steve Watterson said no suburb was immune from burglars, but affluent suburbs in Brisbane's west and inner north were particularly vulnerable. Paddington, Red Hill, and Bardon were cited as examples. Snr-Sgt Watterson said luxury cars were often targeted. "We've seen a lot of luxury cars like Audis and BMWs stolen from the front of people's driveways as owners sit inside unaware," he said.