I was thinking after maybe 6 months only change the air filter... me only go for the replacement air filter type not the cone type... my mom will slaughter me kao kao if I do the other... :P
There has been a recent trend of targeting the cars of notebook carriers, perhaps we can share some advice here on how to avoid being targeted and keeping a low profile.
1. Turn off your WiFi
Some notebooks even when suspended or even off might still transmit a wifi signal. If there is an switch, turn it off or you use a plugin wireless card pull it out and keep it in the bag.
Though you are not at risk of being hacked, this signal can still be detected. There are people here...
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