Below is the original version of my letter, which was published in the Straits Times Forum on Jan 6, 2021, with edits that reduced my...

If you are interested in my research and would like to join my group as a Ph.D. student, this page is for you. First, please read the...

[Updated Aug 2026] Many students ask me to write them a recommendation letter, whether for a job or internship application, or for graduate studies. I usually decline, unless I have worked with the student in a project before. Here's why. Concrete Examples To write a good letter, I need to be able to give concrete examples. General comments, such as, "This student is hardworking and smart", are weak and useless. Everybody applying for a job or for graduate school is ha

On 21 Oct. 2016, The Straits Times reported that facial recognition may used instead of fare cards for MRT rides, if the Advanced Fare...

Photo credit: Tim Donnelly, https://flic.kr/p/48Dq5c TL;DR version: So as to achieve happiness, prosperity, and progress in the year...

This blog explains the difference between Privacy and Security.