Personal alarms can be used as a safety alarm and they fit in a purse or keychain. The personal alarm is just like your car key chain with a button when you need any help you can just press the button.

1. A person alarm is one of the best ways to get help from the people who are
nearby. When you are in danger or you need medical help. The personal alarm
is just like your car key chain with a button when you need any help you can
just press the button.
What is the function of a personal alarm?When
you press the button or pull the tag it produces sound
with huge volume, which gives the signal to the people
nearby that someone is in trouble. Depending upon the
model and cost, the volume varies.
About personal safety apps:
When you are travelling alone if you feel like someone is
following you are trying to speak with you in a different
manner, there will be an alarm button as soon as you
open the app if you press that button the message will be sent to your family,
friends and nearby police station with route map where you are located which
helps them to find you easily and quickly.
This personal safety application also has different features like if your cell
phone is offed or due to low battery it got switched off even then your location
will be traced as the application consists of sentinel which will send message to
important people in your contacts as soon as your mobile get offed or even you
can set up a timer as the time strikes zero the alarm get activated and it send
messages that you need help.