Use one checkpoint between Singapore and Malaysia

I visited Malacca over the weekend. Had to pass through the Singapore and Malaysian customs on the way to Malacca. And to pass through the Malaysian and Singapore customers on the way back. How much wasted time passing through two checkpoints each way.

Surely, our high paid ministers know that there is no need to have two checkpoints? They could have a common checkpoint and ask the travelers to scan their passport only once. This will reduce the wasted time by half. The two governments can share the data, instead of duplicating the work.