Korben’s alarm clock is a transparent liquid-crystal display that juts out from a panel at the foot of his bed. When it goes off, it emits a high-pitched repetitive whine. To silence it, Korben must sit up and pinch it between his fingers.
There’s some subtle, wicked effeciveness to that deactivation. Like a regular alarm clock, the tactic is to emit some annoying sound that persists until the sleeper can rouse themselves enough to turn off the alarm. The usual problem with this tactic is that the sleeper is stupefied in his half-awakeness. If he can sleepily stop the alarm and just go back to sleep, he’ll do it. This clock dissuades sleepy flailing with its sharp-ish corners. After just a few times trying to do that and failing, the scratches on his hand will teach him. Even if the motion is memorized, the sleeper has to wake enough to target it properly and execute the simple but precise input.
The display itself shows the time in astronomical format, i.e. “02:00”, the date (Director Luc Besson‘s birthday), “18 MAR 2263″, and a temperature, 27.5° C.” Since this is quite warm, I presume this is the temperature outside.
Once Korben cancels the alarm, his apartment comes to life. Heavy-beat music begins to play and lights automatically illuminate near the fake-fish tank above the stove and in his cigarette dispenser.
All these signals combine to make it difficult for sleepy Korben to stay in bed past when awake Korben knows he should be up and moving.