The Playground strand of ABSOLUT Fringe is theatre that describes itself as immersive and interactive, and involves that most alarming of all phrases, audience participation. Just In Time, however, does not even come close to that particular form public torture. You don't have to studiedly avoid eye contact with cast members or be hauled up on stage to be embarrassed – mostly because there isn’t even a stage involved. The labyrinthine streets of Temple Bar serves as the set, and can be traversed singly or in pairs as long as you are armed with a trusty iPhone or Android phone.

Máiréad Ní Chróinín’s script is set in a Dublin two hundred years in the future (there's a new Luas line which has probably taken those two hundred years to be built) with a plot that involves the cure for ageing and its terrorist opponents, La Muerte. With your iPhone, your task is to hunt down these terrorists and protect those who want to live forever. Aided with a live map, audio and visuals, the technology is used cleverly and simply, bringing you to hidden nooks and crannies around the streets of the city centre. The sci-fi storyline seems tired at first, but brings you to making an active, pivotal decision. Well executed and absorbing, this is a good hour during which you can be the lead in your very own action film.

Star rating: ★★★