• Comparing Google Maps 3D with Singapore’s OneMap3D https://tongwing.woon.sg/blog/comparing-google-maps-3d-with-singapores-onemap3d/ 28 comments 25/3/2020
• On SGQR, Singapore's unified QR code payment system https://tongwing.woon.sg/blog/on-sgqr-code/ 30 comments 19/9/2018