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The Mornington robberies show the importance of businesses having security measures and plans in place, Dunedin police say.
Dunedin-Clutha area commander Inspector Greg Sparrow said extensive police work led to the arrest on Monday of a 37-year-old man over three alleged aggravated robberies of the Mornington Night 'n Day.
But the shop owner could have implemented more preventive measures to stop the shop being a target of thieves, he said.
Police had spoken to the shop owner before about improving shop security, Insp Sparrow said.
Police would work with any business owners to help them ''beef up'' their shop security, Insp Sparrow said.
Dairy owner Qian Sun said she had implemented new security measures but wanted to keep them secret from thieves to ensure the protection of her staff and would provide staff with training on what to do in a robbery.
She was pleased police had arrested a man, she said.
''They did a very good job. I'm very happy now because yesterday I was very negative about police but now I'm so pleased they have done a good job, finally.''
Tips to improve security
• Keep windows clear of posters, shelving and advertising that blocks the view into the shop, so people outside can see clearly inside it.
• Install a good quality CCTV system. Place a video monitor and surveillance camera at the entrance so customers can see themselves in the monitor when they enter. Install visible signs that let customers know you have security measures, such as cameras and drop safes.
• Make sure the shop interior is well lit during work hours and after hours.
• Put the cash register at the front of the store near the main entrance to deter thieves, as they have to walk past your staff when entering or exiting the store.
• Make all areas of the shop visible from the sales counter and keep shelves low so staff can see over them.
• Eliminate blind spots that make it easier for thieves to steal items.
• Keep displays full so staff can see at a glance if something is missing.
• Keep expensive goods on display in the back of the shop, under lock and key.
• Train staff in loss prevention and detection techniques so they know how to apprehend thieves.