What kind of lock would be safest for front door and the least easy to pick?

Replying to [juanjuan2]:
a schlage deadbolt can be keyed from the outside.

Replying to [juanjuan2]:deadbolt do be safe

Replying to [juanjuan2]:The best lock I have found to be the safest is a deadbolt, but not one that is keyed on both sides.

Replying to [juanjuan2]:deadbolt is the best,and inside the house best bet would be a chain lock

Replying to [juanjuan2]:A monitored security system that is designed to allow you to arm it while you are home as well as away will also go a long way to put your mind at rest

Replying to [juanjuan2]:Any lock can be picked, try a 2x4 (or steel beam) placed vertically in front of the door and grounded in the floor say about 2 or 3 inches deep and secured to the door using brackets use this while your are at home to reinforce the door knob lock and dead bolt.

Replying to [juanjuan2]:You can get Deadbolt locks that are keyed on the outside and have an easy to turn lever/knob on the inside in order to get out easily

Replying to [juanjuan2]:Your best choice is alarm system and high security locks.

Replying to [juanjuan2]:Please go and seek the advise of your local locksmith, they know which is the hardest lock

Replying to [juanjuan2]:No locks are safe today. You must reinforce the door framing. The lock and screws are in the wood but there is only 1/2 inch of wood to kick through. The wood today is very weak. Buy a device that blocks the opening of the door. It makes a triangle. The door, the device the floor. Best defense is a big dog!
Sincerely,
Jimmy