If you’ve ever stood in front of a self-service check-in terminal, fumbling with a passport that won’t scan, or wondering why your boarding pass isn’t printing—you’re not alone. As someone who’s spent the last decade designing, installing, and supporting these terminals for airports worldwide, I’ve seen every mix-up and smooth operation under the sun. Today, I’m pulling back the curtain on how these machines actually work, not just from a technical manual perspective, but from the on-the-ground knowledge I’ve gained sitting next to harried travelers, training airport staff, and troubleshooting after hours when a flight is delayed. This guide is for anyone who’s curious about the process, whether you’re a new airport employee learning the ropes, a frequent flyer who wants to speed up your next trip, or even a fellow vendor who wants to get better at supporting their own equipment. Let’s start with the basics, because there’s more to operating a check-in terminal than just tapping a screen. Check-in Terminal
First, a quick disclaimer: not all terminals are identical. Some are built for small regional airports, others for major international hubs, but the core workflow is consistent across every model we supply. When we deliver a terminal to an airport, our team doesn’t just drop it and leave—we train their in-house staff, and that training always starts with pre-operation checks. This is the step most people skip, but it’s the most critical for avoiding problems mid-shift. Think of it like pre-flight checks for an airplane; you wouldn’t take off without verifying everything, and you shouldn’t fire up a check-in terminal without doing the same.
The pre-operation routine takes about 5 minutes, and it’s designed to catch small issues before they turn into passenger headaches. First, we always check the physical components. The passport scanner is the most finicky part, so we run a quick test: hold a test passport (we keep these on-site for exactly this reason) up to the scanner, make sure the chip reads, and that the machine captures the MRZ (machine-readable zone) line of text at the bottom. If the scanner is dirty—even a tiny smudge from a previous traveler’s fingerprint can throw it off—we use the microfiber cloth we provide to wipe the glass gently. Next, we check the baggage tag printer. We pull a blank tag, feed it into the printer, and hit “test print” to make sure the text is clear, no streaks, and that the tag advances properly. A jammed printer mid-check-in is the number one complaint we get from airport staff, so checking this every morning prevents that. We also verify the boarding pass printer, same process, plus check the paper roll level—running out of paper 10 minutes before a flight boards is a disaster. Finally, we connect the terminal to the airport’s network. Most modern terminals rely on a wired LAN for speed, not Wi-Fi, because Wi-Fi can drop during peak hours. We ping the airport’s server to make sure communication is stable, and confirm that the airline’s reservation system is connected. That’s it for pre-operation. It sounds simple, but I’ve seen airports skip this step, and within an hour, three terminals were down because the scanners were dirty.
Once the pre-checks are done, it’s time to walk through the step-by-step operation for a traveler, because operating the terminal isn’t just about the machine—it’s about guiding passengers through it, which is what makes the difference between a smooth process and a bottleneck. When a traveler approaches, the first thing they need to do is select their language. Most of our terminals have 10+ language options, so we make sure the default is set to the primary language of the airport, but also that the menu is clear. The next step is checking in: travelers can either scan their passport, enter their confirmation number, or scan their boarding pass from a previous flight (if they have a connecting itinerary). Here’s a pro tip from our training: if a traveler’s passport doesn’t scan, don’t tell them to type the whole number out. Instead, ask them to hold the passport open to the photo page, align the MRZ line with the guide on the scanner, and make sure the passport is flat. Most of the time, the problem is a bent corner or a smudge, not a broken scanner.
After verifying the passenger’s identity, the terminal pulls up their reservation details: name, flight number, seat assignment, baggage allowance. At this point, the passenger can either accept the auto-assigned seat or choose a different one from the map. I always tell new staff to let travelers know that seats near the front or exit rows usually cost extra, so the passenger isn’t surprised if the machine asks for payment. Then comes the baggage step: if they have checked bags, they select the number of bags, and the terminal calculates the weight and cost (if applicable). Here, the bag scale is another part that needs attention—we calibrate it once a month, but in daily operation, we just make sure the bags sit flat on the scale, not tilted, which can give a wrong weight. Once the bag is weighed and paid for, the baggage tag prints automatically. We tell travelers to make sure their name and flight number are on the tag, and then they attach it to their bag and drop it in the designated slot at the bottom of the terminal. The machine then prints two receipts: one for the passenger, and one that gets routed to the airport’s baggage handling system. For carry-on only passengers, after seat selection, they just print their boarding pass and head to security.
Now, no process is perfect, and even the best terminals will have hiccups. That’s where the operational troubleshooting part comes in, which is the second most important part of operating a check-in terminal. When a passenger hits an error, the first rule is to stay calm—we’ve all had tech glitches. Let’s go through the most common issues and how to fix them. The first is a scanner fail: if the machine keeps saying “passport not recognized,” first check the lens for dirt, then try a different part of the passport (some countries have the MRZ on the back). If that doesn’t work, use the manual entry option, where you type the numbers from the MRZ line. Another common issue is a jammed baggage tag printer. If the paper doesn’t feed, turn off the terminal gently (don’t yank the power cord), open the printer compartment, pull the jammed tag straight out (never tear it), check that the roll is loaded correctly, and restart the machine. We always keep a spare tag roll and a pair of tweezers in the terminal’s locked drawer for this exact reason.
Another frequent problem is connectivity issues. If the screen shows “waiting for airline server,” first check the network cable to make sure it’s plugged in tight. If that doesn’t work, restart the terminal—9 times out of 10, a quick reboot fixes the connection. The key here is to not let one glitch back up the line of passengers. We train staff to have a backup plan: if one terminal is down, direct travelers to another, or use a staff-assisted check-in desk until the terminal is working. Also, we have a 24/7 support line for our terminals, so staff don’t have to figure out major problems alone.
Wait, let’s talk about maintenance, because operating a check-in terminal isn’t just about when it’s in use—it’s about keeping it running long-term. This is something we emphasize with every airport we work with, because a well-maintained terminal lasts 5+ years longer than one that’s ignored. Daily maintenance is just the quick wipe of the scanner and checking the paper levels, as we mentioned earlier. Weekly maintenance is a bit more involved: we clean the touchscreen with a non-ammonia cleaner (ammonia can scratch the surface), vacuum around the base to get rid of crumbs from travelers’ snacks, and check the scale calibration. Monthly maintenance includes calibrating the bag scale, updating the terminal’s software (we push automatic updates, but sometimes staff need to manually trigger them), and testing the emergency stop button, which is there if a bag gets stuck. Annual maintenance is something our team does on-site, where we check all the internal components, update hardware if needed, and run a full system test. We give each airport a custom maintenance schedule when we install their terminals, tailored to how many flights they handle per day—small regional airports need less frequent maintenance than hubs that process 10,000 passengers a day.
I should also mention safety, because check-in terminals are public-facing, so it’s important to operate them in a way that keeps both passengers and staff safe. The emergency stop button should never be covered by a bag or a sign—staff need to know exactly where it is. We also make sure that the terminals are stable, bolted to the floor, so no one can tip them over (that’s a rare but embarrassing problem we heard about from a small airport last year). Also, the bag drop area should be clear of clutter, so no one trips over a loose tag or a spilled drink. Finally, data security is a big one. Our terminals are compliant with global privacy regulations, but staff should never leave a terminal unattended while it’s pulled up to a passenger’s personal information. If you have to step away, hit the “log out” button so the next traveler can’t access the previous person’s reservation details. That’s a simple step, but it’s a non-negotiable for operating the terminal responsibly.
Over the years, I’ve seen how these small, daily steps add up. A passenger who scans their passport correctly, a staff member who wipes the scanner, a terminal that doesn’t jam—all of that adds up to shorter lines, less stress for travelers, and on-time flights. I remember a time last year, during a holiday rush at a major European airport, one of our terminals had a tiny paper jam. The staff followed the steps we trained them on: opened the printer, pulled the tag out without tearing it, swapped in a spare roll, and had the terminal back up in 2 minutes. If they’d panicked and called us, that delay would have backed up 50 passengers. That’s the power of proper operation: it’s not just about the machine, it’s about the people who use it every day.
If you’re an airport manager, operations lead, or someone looking to equip your space with reliable check-in terminals, we’re here to help. Whether you need training for your staff, a custom maintenance plan, or new terminals for a growing hub, our team has the experience to support your needs. We work with airports of all sizes, from regional hubs to international gateways, and our focus is on making the check-in process as smooth as possible for everyone involved. To connect and discuss your specific requirements, reach out to our team to start a conversation tailored to your operations.
Windows POS System References:
- International Air Transport Association (IATA). (2022). Self-Service Check-In Terminal Operational Guidelines. IATA Aviation Technology Report.
- Federal Aviation Administration (FAA). (2021). Public Use Terminal Safety and Maintenance Standards. FAA Airport Operations Manual.
- Global Passenger Services Association (GPSA). (2023). Best Practices for Self-Service Terminal Training and Troubleshooting. GPSA Operational White Paper.
- International Organization for Standardization (ISO). (2020). ISO 18155:2020 – Airport Ground Handling Services – Self-Service Check-In Terminals. ISO Standards for Aviation Infrastructure.
Shenzhen Sunany Technology Limited
Shenzhen Sunany Technology Limited is one of the most professional check-in terminal manufacturers and suppliers in China, featured by quality products and good price. Welcome to wholesale bulk advanced check-in terminal made in China here and get pricelist from our factory. Contact us for customized service and OEM service.
Address: 7F, Building 2, Pingji Avenue No.13, Longgang, Shenzhen, China.
E-mail: info@sunany.com
WebSite: https://www.sunanypos.com/
