Wi-Fi for Cafés and Restaurants: How to Give Guests Fast Internet Without Putting the Till and Terminals at Risk, and Why a Home Router Can't Cope

For many guests, café Wi-Fi is as basic as a socket for their phone. In Tbilisi, with its many tourists and remote workers, slow or patchy Wi-Fi quickly turns into bad reviews. But for the venue itself, something else matters even more: the till, POS terminals, kitchen order printers, cameras and background music often run on the same network. If the guest internet is set up wrongly, one customer downloading a film can stop card payments. Let's look at how to do Wi-Fi properly in a café or restaurant.

Why a home router can't cope

A venue can have 30–100 devices at once: guests' phones, laptops, tills, terminals and waiters' tablets. A home router is designed for 10–20 active devices, and starts freezing, dropping connections and overheating. On top of that, one router in the back room rarely covers the whole dining room, an upper floor and the terrace. That's why venues use a router with performance to spare and separate access points in the dining area.

Covering the dining room and terrace

• Access points go on the ceiling or high on a wall, spread evenly across the room — not in the back room behind the kitchen.
• A kitchen full of metal equipment and cold rooms heavily blocks the signal — this needs allowing for in the plan.
• A summer terrace needs an outdoor access point protected against moisture and dust.
• The access points connect to the router by cable and work as one network, so guests can move to another table without losing the connection.

Separate networks — the golden rule

The guest network must be completely separate from the staff network. The staff network holds the till, POS terminals, order printers, the manager's computer, CCTV cameras and the recorder. Guest devices must not be able to see them. This protects against accidental problems and against deliberate attempts to reach the till. Card payments in particular require the payment equipment to be protected, and mixing it with an open guest network is a serious risk.

Guest network settings

• A per-device speed limit, so one guest can't take the whole connection.
• Client isolation — guests can't see each other's devices.
• A password that's changed periodically, or a sign-in page with terms of use. A fully open network attracts neighbours and passers-by.
• Priority for staff traffic — the till and terminals get bandwidth first.
• QR codes on the tables for connecting without typing a password.
• A schedule — the guest network can switch off after closing time.

Which plan you need

A small coffee shop with 20–30 seats usually manages with 100–200 Mbit/s; a large restaurant or café-coworking space needs 300–500 or more. Upload speed matters too: guests send photos and videos and make video calls. With a per-device limit, even a modest plan serves many guests comfortably. For venues where the till is critical, consider a backup line — a mobile 4G/5G router that takes over if the main provider fails.

Music, TV and menus

Background music from streaming services, TVs showing matches and digital menus also use the internet. They're best connected by cable to the staff network so the broadcast doesn't cut out just as the room fills up.

Common mistakes

• One network for guests and the till, with the password written on the menu.
• The provider's router in the back room, with Wi-Fi not reaching the far tables or the terrace.
• No speed limit — one guest downloads updates and everything slows for everyone.
• A password unchanged for years and known to the whole neighbourhood.
• No UPS — a voltage spike restarts the router and the till.

What our technician does

1. Surveys the premises, terrace and kitchen and plans where the access points go.
2. Selects a router, access points and, if needed, a backup 4G/5G line.
3. Runs cables and mounts the equipment on ceilings and walls.
4. Separates the guest and staff networks and sets up limits, isolation and priorities.
5. Connects the till, terminals, printers, cameras, TVs and music and tests everything under load.

A real example

A popular coffee shop in Sololaki was getting complaints about its Wi-Fi in reviews, and at peak times the POS terminal sometimes couldn't take a payment. Our technician found that guests, the till, the terminal and the cameras were all on one network with the password on the wall, and the only router stood behind the kitchen. We installed a venue-grade router, two ceiling access points in the dining room and an outdoor one on the terrace, created a staff network for the till and cameras, limited guest speeds and gave the terminals priority. Reviews of the Wi-Fi turned positive, and the payment problems stopped.

It's also worth deciding who is responsible for the network. Managers change often in hospitality, and a year later nobody remembers the router password or who the provider is. So after installation we leave the owner a single document with the network diagram, the equipment list, the guest and staff network passwords and the provider's contact details. Every few months it's useful to check that no unfamiliar devices have appeared on the staff network, that the router and access point firmware is up to date, and whether it's time to change the guest password. This simple upkeep takes little time but saves you from nasty surprises on a busy Friday night.

Call a technician

If you're opening a café or restaurant or want to improve your venue's Wi-Fi, we'll come to any district of Tbilisi around the clock. Learn more on our Wi-Fi setup, local network installation and CCTV pages.