Once it's put on, unless the password set by Ivana Bennett is entered, it cannot be removed; if someone tries to forcibly cut or destroy it, the computer system will automatically sound an alarm.
Since he often took the two little ones around the world for fun, and they disliked being watched by bodyguards all the time, Lucas Walker specifically had this system made for use when necessary.
Generally speaking, it's only when Ivana Bennett takes them out for fun that they use it.
This time, due to special circumstances and considering the what-ifs, Ivana Bennett took the initiative to bring out the ankle bracelets.
Hearing Ivana Bennett mention "including bathing and going to the Toilet", the two somewhat reluctant little ones immediately stretched out their hands, took the ankle bracelets from her, and fastened them to their own ankles.
As soon as the ankle was secured, the red indicator light on it flashed once and then stayed lit.
