Among the honourable guests were the Swedish royal couple, politicians and eminent representatives of some of Sweden's largest companies.

"We received an enquiry about equipment that could be used to quickly set up a temporary perimeter alarm and realised that this was perfect for our laser sensor Vfence F-501. 10 minutes is enough to configure and test the system", says Erik Lindstein, CEO of Embsec.

The laser sensor creates a virtual fence of up to 500 metres where zones with individual alarms can easily be adapted to match the surroundings. Around the City Hall the system was used to control both extra lighting and to send alarm via SMS to patrolling guard, with information about the precise location of intrusion.

"Thanks to the accurate positioning the dog patrol could quickly follow up the alarms, even if they were in another location. The guards had a good support from the laser, while it at the same time increased the security in vulnerable areas," continued Erik Lindstein. "Luckily there were no sharp alarms and the guests could celebrate in peace and quiet inside the City Hall." He concluded.