This hold-up alarm should make a big splash… Belgian John Gosselin is the inventor of Altoldup, a revolutionary anti-aggression teaches. With a wingspan of one meter, this sign is placed on the facade of a shop or a house. It is directly connected to a panic button worn by the owner. When turning or trade home-jacking, just to make it a pulse on the remote control for the brand starts to grow a powerful alarm signal. Simultaneously, strobe light flashes as a message « HOLD UP – CALL POLICE ». Residents and passersby are immediately alerted and can prevent the attack as soon as the police. Surprised by so much attention, the robbers should not ask them rest and will go away without any loot.