Perimeter protection business booms in tandem with Europe's refugee crisis

Many of the security systems at the perimeter protection trade fair, previously the preserve of protective states, are now being deployed in homes

Anyone who steps unwanted over the threshold of a property with a Peperosso atomiser installed can expect an immediate burning sensation as chilli paprika is sprayed in their face. The instruction booklet promises "tears and coughing" and "a lot of slime".

"We usually talk about paprika as the most popular ingredient in our national cuisine," says Erika Madlena, from the Hungarian company Umirs that makes the Peperosso. "But in this case it provides an effective and good value way of safeguarding your home from intruders".