By the SightShield team · · 3 min read
Why the main door matters most
In flats, the main door is usually the only way in, and in independent houses it is still the most common entry point for break-ins along with balconies and rear doors. Burglars in Bangalore typically force the latch side of the door, break the lock with tools, or simply walk in when the door is opened to a stranger posing as a courier or technician. Good main door security covers all three: the door itself, the lock, and knowing who is outside before you open.
Layers of a secure entrance
| Layer | What to look for |
|---|---|
| Door and frame | Solid core door, strong frame fixed into masonry, steel strip or reinforcement on the lock side |
| Safety grille door | Steel grille door outside the main door so you can talk without opening |
| Locks | A good-quality mortise or multi-point lock, or a smart lock with a mechanical backup |
| Seeing who is outside | Video door phone or a camera at the door, plus a wide-angle peephole |
| Alerts | Door contact sensor linked to an alarm or app |
| Lighting | Light outside the door on a motion sensor or timer |
Locks: mechanical and smart
The strongest door is only as good as its lock. A mortise lock with a hardened bolt that goes deep into the frame resists forcing far better than a surface rim latch. Smart locks add convenience — PIN, fingerprint, app or card, and a log of who entered — and let you give a one-time code to a cook or maid instead of a key. Choose a smart lock with a solid mechanical bolt and a key or emergency power option, and fit it on a door it is designed for.
Smart door locks guide →See before you open
Many thefts start with someone ringing the bell. A video door phone shows the visitor on an indoor screen and lets you talk without opening, and the outdoor unit records the face. Models with app notifications let you answer from office. In apartments, an intercom from the security cabin confirming visitors adds another layer. Teach family members, including children and elderly parents, not to open the grille door for anyone they did not expect.
Video door phone vs Wi-Fi doorbell →Alerts and cameras
- A door contact sensor sends an alert when the door opens while the home is armed or while you are travelling.
- A camera above or beside the door captures everyone who approaches, including courier and service visits.
- In apartments, check the association’s rules before fitting a camera in the common corridor, and angle it to cover your own door only.
- Keep a light outside on a timer or motion sensor, since dark corridors and porches help intruders.
For renters
Renters can still improve security without major changes: ask the owner to change the lock cylinder when you move in, use a wireless video doorbell or door phone that does not need new wiring, add a battery door sensor, and use a smart lock only with the owner’s permission. Take everything removable with you when you leave.
Security for renters →Worked example
A family in a ground-floor flat in Banashankari had an old wooden door with a rim latch and no grille. After a neighbour’s burglary they added a steel safety grille door, replaced the latch with a smart mortise lock with key backup, fitted a video door phone connected to their phones, and a door sensor that alerts them when they are away. Their parents now speak to visitors through the grille and the screen, and the log shows when the cook arrives and leaves.
Quick answers
What is the best lock for a main door?+
A good-quality mortise or multi-point lock, or a smart lock with a strong mechanical bolt and key backup.
Is a safety grille door worth it?+
Yes. It lets you talk to visitors and receive parcels without opening the main door.
Can I put a camera outside my flat door?+
Usually yes, if your association permits it and the camera covers your own door, not neighbours’ flats.
Do smart locks work in a power cut?+
They run on batteries and usually have a mechanical key or emergency power option.
What should I do if someone claims to be a technician?+
Speak through the grille or door phone, check with the company or association, and do not open until confirmed.