Keeping checkout moving when the internet is unreliable

A customer is at the counter, the queue is growing and the connection has dropped. Or the power has gone and the router with it. In many shops this is not a rare event, and the way you respond decides whether you lose sales, or lose track of them.

This guide is for owners and managers of shops, supermarkets and pharmacies with one to five branches. It does not depend on any particular software. It is about having a plan, so that an outage slows you down without breaking your records.

Decide in advance what happens when the connection drops

The worst time to decide is in the middle of a rush. Write a short outage plan and put it where staff can see it. It should answer:

• Who decides that we are in "outage mode", and who decides when it ends?
• What do we do about sales while it lasts?
• What do we say to customers who are waiting?
• Who is responsible for entering the manual sales afterwards?

Keep it to one page. A plan that is clear and short is more likely to be followed than a perfect one that nobody has read.

Keep a manual fallback ready

A manual fallback is a small kit that lives next to the till:

• a numbered receipt book with carbon or duplicate copies, so that one copy goes to the customer and one stays with you;
• a pen and a calculator;
• a current price list, printed or written;
• a cash box or sealed envelope for outage takings, separate from the normal drawer, if you can;
• a voided receipts rule: a cancelled receipt is crossed out and kept, never torn out.

Numbering matters. If receipts are numbered in order and none are missing, you can check afterwards that every sale is accounted for.

Know which sales are safe to take during an outage

Not every sale carries the same risk when you cannot check anything. Agree a rule beforehand, for example:

• Cash sales of items with a known price are usually the simplest to take.
• Sales on credit or customer accounts are riskier, because you cannot check the balance or the limit. Many shops choose to pause these, or to accept them only from customers they know well and write them down.
• Loyalty points, vouchers and gift cards cannot be checked or updated, so set a rule for how they are handled or postponed.
• Card and mobile money payments depend on the provider's connection, not only on yours. Check whether they are working before you promise them to a customer.
• Stock levels cannot be checked, so avoid promising an item you have not seen on the shelf.

The right rules depend on your shop. What matters is that staff know them before the connection drops.

Reduce how often it happens

You cannot control the network, but you can reduce how much an outage costs.

• Keep the till and the router on backup power if you can, so a short power cut does not stop both.
• If your connection comes from one provider, consider a second connection as a backup, such as mobile data on a phone or a separate line.
• Place the router where the signal is strong at the till, and avoid long chains of cables and adapters.
• Test the backup once in a while, when the shop is quiet, rather than discovering that it does not work during an outage.

Record and reconcile afterwards

When the connection returns, the work is not finished. The manual sales still have to be entered and checked.

1. Enter the manual receipts in order, and mark each one in your records as an outage sale, with the receipt number.
2. Count the receipts and check that the numbers run in sequence, with no gaps.
3. Compare the total of the manual receipts with the cash and other payments taken during the outage.
4. Make sure nothing is entered twice. If your system also captured some sales during the outage, match them against the paper receipts before you enter anything.
5. File the paper receipts with the day's shift sheet.

Illustrative example (the numbers are made up to show the method, not real figures). During an outage you write 14 manual receipts, numbered 0231 to 0244, totalling 86,500 FCFA, of which 78,000 FCFA was cash and 8,500 FCFA was mobile money. After the connection returns, you enter all 14, and the recorded total is 86,500 FCFA. The cash in the outage envelope is 78,000 FCFA. The numbers match, so the outage is closed. If the cash were 76,500 FCFA, you would know which 1,500 FCFA to look for.

Practise before you need it

Once a month, run a short drill. Ask a staff member to take a few practice sales using the manual kit, and then enter and reconcile them. It takes a few minutes, and it shows you where the plan is unclear: a missing pen, a price list that is out of date, or a step nobody remembers.

Train new staff on the outage plan in their first week, before they face a real outage.

A practical checklist

• A one-page outage plan is displayed near the till.
• A numbered receipt book, pen, calculator and price list are kept next to the till.
• Staff know which types of sale are taken, paused or restricted during an outage.
• A separate cash box or envelope is used for outage takings.
• Backup power protects the till and the router where possible.
• A backup connection exists and has been tested.
• After an outage, manual receipts are entered in sequence and marked.
• Manual totals are compared with the cash and other payments received.
• Double entry is checked before anything is recorded.
• A short outage drill is done every month and new staff are trained.

Frequently asked questions

Should we stop selling when the internet fails?

Usually not. Most shops can carry on with cash sales of items with known prices using a manual fallback. What you should pause or restrict are the sales that depend on a connection you no longer have, such as credit accounts, vouchers and some card payments.

How long should we keep the manual receipts?

At least until they have been entered, reconciled and reviewed. For how long to keep records beyond that, follow the advice of your accountant, because the requirements depend on your business.

Can we accept mobile money during an outage?

It depends on what has failed. If only your shop's connection is down, the payment may still arrive on your provider's side. Check that you can confirm the payment before the customer leaves with the goods.

Conclusion

An unreliable connection is manageable with a plan: a manual kit next to the till, clear rules on what you sell during an outage, backup power where you can, and a careful check when the connection returns. Practise it, so that it feels routine when it matters.

NexaPOS is a retail operating platform for checkout, stock, customers, staff, reporting and multi-branch operations. Its approach to connection loss is this: Offline-capable checkout for eligible sales. Eligible sales can be captured during a connection loss and synchronized safely later. Not every feature works without a connection, so keep your manual plan for anything that is not eligible, and ask in a demo which sales are eligible in your case.