In renewing identity cards, the Immigration and Checkpoints Authority should take the opportunity to make an additional change in identity cards ("NRIC re-registration for S'poreans, PRs turning 55"; Nov 15).

Currently, the only way to tell the difference between citizens and permanent residents is by the colour of the identity card - red for Singaporeans and blue for PRs.

However, this distinction does not show up for those who need to submit black-and-white photocopies of their ICs. Not everyone has access to colour copiers.

Some other way of distinguishing ICs of Singaporeans from those of PRs needs to be considered.

Soh Gim Chuan