Short answer
Card access in a hotel has three layers: guest room locks, staff and technical area doors, and, if needed, elevator floor control. Room locks are programmed with the card encoder at reception; offline locks run on batteries and carry the card information themselves, while online locks are managed instantly over the network. Cameras watch the lobby, corridors, elevators and entrances; no cameras are placed inside the rooms.
Why switch from a mechanical key to a card lock?
In small hotels and guesthouses that use mechanical keys, the most common problem is the lost key. When a guest takes the key away or loses it, the lock of that room needs to be changed for security. It is also unknown who entered the room at what time.
With a card lock, if a card is lost, reception writes a new card and the old card is canceled. The card is valid until the guest’s checkout date; after checkout, it does not open the door. The lock keeps the latest entries in its memory; when there is a complaint, you can read which card entered the room and at what time.
A card system also brings order on the staff side. A housekeeper’s card opens only the floor they are responsible for and only at certain hours. The card of an employee who leaves the job is deleted from the system.
Offline or online?
Most hotel locks work offline. The lock is battery-powered and not wired to anything. The card encoder at reception writes the room number and the validity period onto the guest’s card, and the lock checks this information when it reads the card. It is easy to install and can be applied to existing doors.
Online locks, on the other hand, are connected to software over a wired or wireless network. Reception can cancel a card remotely and see in real time whether a door has been left open and the battery status. They are preferred in large hotels and on floors that need high security, but the infrastructure and installation work is greater.
In some systems, a door can also be opened with a digital key loaded on a phone instead of a guest card. This feature depends on the lock brand used and the hotel management software.
Expert note: With offline locks, if batteries are not replaced regularly, a guest may be left at the door at night. Learn at installation how the lock gives its low-battery warning and how reception will see it, and add battery checks to the housekeeper’s routine.
Card types and authorization structure
In hotel lock systems, cards with different levels of authority are defined. This structure determines who can open which door and how much risk a lost card creates.
It is important to keep the number of master cards low and to track in a list who holds them. Losing a master card means losing a key that can open all the rooms. In that case, the card should be canceled in the system right away and the cancellation information should be loaded onto the locks.
- Guest card: opens only their own room and, if defined, the common areas
- Floor card: opens the rooms on the floor the housekeeper is responsible for
- General master card: opens all rooms; kept in small numbers and stored locked up
- Emergency card: can open a locked or bolted room; held by management only
- Technical staff card: opens utility and maintenance rooms
- Cancellation card: used to invalidate a lost card on the lock
Energy-saving card holder and hotel software
The energy-saving card holder at the room entrance cuts the room’s lighting and air conditioning when no guest card is inserted. In a Şanlıurfa summer, an air conditioner running in an empty room while the guest is out means a serious amount of electricity. If the holder is a model that recognizes only that hotel’s card, it also prevents a guest from inserting any random card and leaving the air conditioner on.
The lock system can be integrated with the hotel’s reservation and accommodation software. In that case, the card is written automatically at check-in and canceled at checkout. Whether integration is possible depends on the hotel software you use and the lock brand; ask both sides before buying.
In Türkiye, accommodation facilities must report guest information to law enforcement. This reporting is a separate process from the lock system, but if the hotel software can handle both tasks from the same screen, it lightens the load on reception.
Staff areas and elevator control
The kitchen, laundry, storage, server room, safe and accounting office are areas closed to guests. Card readers that open with a staff card are placed on these doors, and every passage is recorded. By adding a PDKS terminal to the staff entrance door, working hours can also be tracked with the same card.
In multi-story hotels, elevator floor control lets only the cardholder go up to their own floor. The guest presents the card in the elevator, and the elevator activates only the button for the floor where their room is. This setup limits strangers’ access to the floors, especially at night. To install elevator control, you need to work together with the elevator company.
Cameras: lobby, corridor, entrance
In a hotel, cameras watch the entrance doors, reception, lobby, elevator fronts, floor corridors, parking lot and staff entrance. The reception camera is placed so that it sees both the guest’s face and the cash transaction. Corridor cameras see the front of the room doors, but are aimed at an angle that does not see into the room when the door opens.
No cameras are placed in guest rooms, toilets, hammams, spas or changing areas. Signs informing people that cameras are in use should be at the entrances and in the lobby. Who will have access to the recordings and how long they will be kept should be written in the hotel’s KVKK policy.
When the lock memory and a corridor camera are used together, a complaint about unauthorized entry to a room is easily investigated: the lock shows which card was used, and the camera shows who used it. The retention period of the recordings is set according to how long after the event guest complaints usually come.
Fire safety and installation
Hotel room locks must always open from the inside with a single motion. In a fire or emergency, the guest must be able to get out without searching for a card. Whether the electric locks in staff areas release when the fire alarm sounds is also determined by the fire project.
In an existing hotel, the switch to card locks can be done floor by floor by vacating the rooms. The thickness of the doors, the existing lock cutout and the door material affect the lock model; that is why trial installations are first done on a few doors. Reception staff should be shown, hands-on at the end of installation, how to write cards, cancel cards and read the lock memory; whether the system works well depends largely on reception doing these tasks correctly. Desa Bilişim plans locks, cameras and staff access together for hotels and guesthouses in Şanlıurfa.
Frequently asked
What happens if a guest loses their card?
Reception writes a new card for the same room. In most systems, the old card becomes invalid automatically once the new card is presented to the door. In online systems, the old card is canceled instantly from the software.
Is a card lock unnecessary for a guesthouse?
Even with few rooms, the problems of lost keys, copied keys and not knowing who entered a room also occur in a guesthouse. Offline card locks can be used in small businesses too. The decision is made according to the number of rooms and guest turnover.
If the lock battery runs out, does the door not open?
When the battery weakens, locks usually give an audible or light warning and keep working for a while. If the battery runs out completely, most models let the door be opened with an emergency key or an external power connection. Checking the batteries regularly prevents this situation.
Locks, cameras and staff access for your hotel
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