17 June 2026 · Aina Rahman
When the tablet can start a pump the panel never showed
A warehouse in Port Klang had a locked local panel and an unlocked vendor app. The difference only appeared when we listed write topics.
Notes
What we keep writing down after site days
Short records from audits and conversations. They are not a substitute for an engagement, and they are not product reviews.
6 May 2026 · Daniel Khoo
Read the tag map before you trust the dashboard
Pretty tiles lie in polite ways. A tag map, a live value, and a walk to the sensor still beat a screenshot of the app.
1 April 2026 · Mei Ling Tan
Shared tablets on the floor, and why the log then means little
If four people share one “Operator” login, your control-application log is a shift diary, not an identity record.
10 March 2026 · Aina Rahman
“The cloud is only monitoring” is rarely a complete sentence
Read the broker ACLs and the function list. Monitoring products grow write paths the year after go-live.
18 February 2026 · Daniel Khoo
Auditing MQTT topics that carry write commands
Topic naming is not a security control. We still start there, because it is where the surprises are labelled.
21 January 2026 · Mei Ling Tan
What PDPA has to do with a control-application log
Operator names, badge numbers, and shift notes in a control app are personal data. The log still has to exist.
8 December 2025 · Aina Rahman
After a vendor remote session: what to re-check
The session ends, the ticket closes, and a new flow is running. Here is the short list we use the next morning.
13 November 2025 · Daniel Khoo
Building an evidence pack before we arrive
A week of preparation in Segambut or on your shared drive saves a week of guessing on the plant floor.