After the Gatso scamera, welcome to the Graffto scamera.
Set up by a non-profit Government authority, Grafftos are to be set up in areas where graffiti is known to occur, and will only be set up where they are in plain sight, but will be camouflaged so they are not seen as eyesores.
In order to function, Grafftos were originally envisaged as using the barcode tatttoos recent legislation required all neds to have (as seen in Dark Angel) for identification, however as they refused to co-operate and covered them, new legislation is about to be approved which advances the compulsory identity card scheme to its next stage, requiring all members of the the public to have a sub-dermal radio tag inserted (£15 with aneasthetic, £10 without) before their next birthday, or be interred.
In operation, the Graffto is triggered by a local motion sensor, immediately transmitting all tag details within range to central control. If any tags remains in the area for more than a few minutes, solvent sensors are activated, triggering the transmission and recording of video evidence at control should they detect fresh paint solvent.
In a move to popularise the Graffto, and reduce court costs and time, silent death squads will be despatched to deal with repeat offenders, a doubly economic move as the graffite cleaners can carry out 'housekeeping' too.