Another Realtor Killed during Open House! RIP Any security apps?

[Jonn Vidal]

"Real estate agent killed showing home. She was reported missing by her
husband after showing a foreclosed home. She was found just minutes
away in a shallow grave.
Murderer appealed the courts for a new trial.

Realtors killed at open house has occurred multiple times in recent years. Crime
is getting worse everyday for realtors. Please be safe.''

So is there a panic button sorta app that helps prevent this?