There is a particular problem associated with some designs in that they are activated simply by the sound of barking.

"That is far from the case," Spock stated, fully aware that Motak's ship had simply activated their cloaking device, rendering Gladiator invisible to all their sensors.

It is activated simply by twisting the handle like this.

The fact that the ion-beam had simply activated the high sulfur content of the steel of Fitz's armor, causing a glow akin to that of phosphorescence, was something else.

Most items are activated either simply by running into them, or by pressing a button that will appear when the point is reached (when outside of battle).

The microsequencer of many early computers, perhaps starting with the Whirlwind (computer), simply activated each row of the diode matrix in sequence, and after the last row was activated, started over again with the first row.

At a predetermined altitude, the sampling system is simply activated by a toggle switch that is easily accessible to the pilot.

No modifications were needed to the user's Applesoft programs; FTL was activated simply by running an installation program after booting up the Apple II.

"If it was an accident," he said after a moment, "they might well have simply activated the wrong piece of equipment."

That means that collections of nerves can be activated simply by shining a light in the appropriate place.