Commuters were baffled by this Singapore passenger who repeatedly tapped in and tapped out of the same subway gate - 40 times in just two minutes on May 17.

The lad was seen swiping his pre-paid card at the electronic barrier at Outram Park station.

But rather then board the city’s MRT train, he made a swift u-turn and headed back through the same set of gates - racking up a fee for the journey.

He then repeatedly entered and left through the same gate a further 19 times. Bemused onlookers branded the man’s behaviour ‘’weird’’ and speculated that it could have been a bizarre game.

Filmer Alan Cheong said he counted the man tapping 40 times - racking up bills for 20 journeys.

He said: ‘’This person kept on tapping in and out of the gantry. It was weird. I have no idea why he was doing it.’’

Some viewers of Alan’s clip suggested the bizarre behaviour was a kind of challenge to see how many times a passenger could tap in and tap out of the station before being moved on.

While others suggested he could be a plain-clothed volunteer who was testing the system or someone who simply wanted to ‘’clock up mileage’’ for loyalty points.

Leow Phing said: ‘’I’ve witnessed this kind of thing it a few times at the LRT stations as there aren’t many commuters there. It’s strange.’’

Raymond Ho said: ‘’He is volunteer off-duty MRT worker who wants to try the contactless master card for tapping in and out.’’

Jade Sadako Soh Mebbe said: ‘’Maybe he picked up the card of his enemy and wanted to use their credit.’’

Commuters were baffled by this passenger who repeatedly tapped in and tapped out of the same subway gate - 40 times in just two minutes.

The lad was seen swiping his pre-paid card at the electronic barrier at Outram Park station in Singapore last Friday (17/05).

But rather then board the city’s MRT train, he made a swift u-turn and headed back through the same set of gates - racking up a fee for the journey.

He then repeatedly entered and left through the same gate a further 19 times. Bemused onlookers branded the man’s behaviour ‘’weird’’ and speculated that it could have been a bizarre game.

Filmer Alan Cheong said he counted the man tapping 40 times - racking up bills for 20 journeys.

He said: ‘’This person kept on tapping in and out of the gantry. It was weird. I have no idea why he was doing it.’’

Some viewers of Alan’s clip suggested the bizarre behaviour was a kind of challenge to see how many times a passenger could tap in and tap out of the station before being moved on.

While others suggested he could be a plain-clothed volunteer who was testing the system or someone who simply wanted to ‘’clock up mileage’’ for loyalty points.

Leow Phing said: ‘’I’ve witnessed this kind of thing it a few times at the LRT stations as there aren’t many commuters there. It’s strange.’’

Raymond ho said: ‘’He is volunteer off-duty MRT worker who wants to try the contactless master card for tapping in and out.’’

Jade Sadako Soh Mebbe said: ‘’Maybe he picked up the card of his enemy and wanted to use their credit.’’