The home ministry said the two-month proof of concept has seen waiting times for the inspection of 30 bus passengers during peak hours shortened to 15 minutes from 120 minutes at BSI and 90 minutes at KSAB.

For motorcyclists, the waiting time was shortened to 30 minutes for the inspection of 30 passengers compared to 40 minutes at BSI and 45 minutes at KSAB.

The ministry said this in a written Dewan Negara reply in response to a question by Halim Suleiman about the effectiveness of the use of QR codes instead of passports during the trial period.

Deputy prime minister Fadillah Yusof previously said the three-month trial would only involve Malaysians travelling to Singapore by bus at BSI and motorcyclists using the automated MBike immigration clearance system at KSAB.

He said its use will be extended to Malaysian private vehicle users and foreigners if the first phase of the trial runs smoothly.

In December, Johor proposed that the federal government introduce a QR code system at the customs, immigration and quarantine complexes in the state, something that Singapore has already done.

Putrajaya and Singapore have also said that passport-free travel is among the initiatives they are looking to implement to support the development of the Johor-Singapore special economic zone.