What are the steps involved in peephole installation for a front door?

The steps involved in peephole installation for a front door are:

1. Measure and mark the desired height for the peephole on the door.
2. Drill a hole through the door using the appropriate size drill bit.
3. Insert the peephole lens into the hole from the outside.
4. Secure the peephole with the provided screws from the inside.
5. Test the peephole by looking through it from both sides to ensure clear visibility.