Costco Checkout Technology 2026: The 8-Second Prescan Promise, Early Reality and What Members Actually Think

The most consistently complained-about dimension of the Costco shopping experience is not the crowds, not the parking lot, and not even the receipt check at the exit. It is the checkout line — the specific combination of large carts loaded with large items, high member traffic, and the traditional checkout process that has historically made the final five to fifteen minutes of a Costco visit the least enjoyable part of an otherwise excellent experience.

In 2026, Costco is attempting to solve this problem with a technology and process change that is simultaneously the most commercially ambitious operational transformation in the warehouse's recent history and the subject of genuinely mixed early reactions from the employees and members experiencing it firsthand.

Costco CFO Gary Millerchip said in the company's second-quarter earnings call: "In digital, we continue to make strides with our roadmap to deliver a more seamless experience for members in warehouse and online. In the warehouses, we are achieving meaningful improvements in the speed of checkout and employee productivity, both as a result of our mobile wallet enhancements, pharmacy pay ahead and the rollout of employee pre-scan technology. We are also piloting automated pay stations that will allow members to pay for their pre-scan orders seamlessly with an average transaction time of around eight seconds." aol

Eight seconds. From cart to receipt. At a store where a full cart of bulk groceries has traditionally required three to five minutes at the register.

This is the promise. The reality, as of mid-2026, is more nuanced — genuinely impressive when the system operates smoothly, genuinely frustrating when it does not. This guide covers both with the honesty that experienced Costco members deserve.

How the New Checkout System Actually Works

The way it works is that while in line, Costco employees will come to you and scan all the items in your cart. By the time you get to the register, you'll just need to scan your membership card and pay. The move is similar to how Chick-fil-A or In-N-Out runs its drive-thru line. aol

The prescan and automated pay station system is a two-component technology transformation working in sequence:

Component 1 — Employee Pre-Scanning:

As members wait in the checkout queue, Costco employees equipped with handheld scanners approach each cart and methodically scan every item. The scanner transmits each item's barcode data to the checkout system in real time, building the complete transaction record while the member is still waiting in line. By the time the member reaches the pay station, every item in their cart has already been logged — the transaction is complete in everything except the payment itself.

The employee doing the pre-scanning does not need the member to unload their cart. They scan items in the cart as loaded — picking up the scanner's beam across the cart's contents in the organized but not necessarily display-perfect arrangement that most members arrive at checkout with.

Component 2 — Automated Pay Station:

According to the transcript of an earnings call, Costco is piloting automated pay stations at select stores. The stations work in tandem with the recent debut of employee pre-scans, where workers scan the items in your cart as you wait in line. In testing, automated pay stations are reducing transaction times to an average of 8 seconds. aol

When the pre-scanned member reaches the front of the line, the automated pay station displays their complete order total — already calculated from the prescan — and the member simply taps their payment method (membership card for identification, then credit or debit card or digital wallet for payment) to complete the transaction. No item-by-item scanning at the register. No cashier reading each barcode individually. Just verify the total, tap to pay, receive receipt.

Eight seconds is the average transaction time at the pay station itself — not the total checkout time including the prescan wait. The eight-second number refers to the time at the payment terminal once the member reaches the front of the queue.

The Broader Digital Checkout Enhancement Stack

The prescan and automated pay station are the most visible elements of Costco's 2026 checkout transformation — but they are part of a broader enhancement program:

In digital, Costco continues to make strides with its roadmap to deliver a more seamless experience for members in warehouse and online, achieving meaningful improvements in the speed of checkout and employee productivity, both as a result of mobile wallet enhancements, pharmacy pay ahead, and the rollout of employee pre-scan technology. MOJO

Mobile wallet enhancements: The Costco app's digital wallet functionality now supports faster payment authentication at checkout — reducing the time required to verify membership and initiate payment for members who use the digital membership card and digital payment functionality built into the updated app.

Pharmacy pay-ahead: Members who fill prescriptions at the Costco pharmacy can now initiate payment through the Costco app before arriving at the pharmacy counter — reducing the wait at pharmacy pickup to a simple collect-and-go experience rather than a full checkout interaction.

The elimination of self-checkout kiosks: Costco has been striving to accelerate the payment process in its locations for several years, having already removed self-checkout kiosks entirely. Mashed

The removal of self-checkout kiosks — a decision that generated significant member discussion when it was announced — was the precondition for the prescan system's implementation. Costco's analysis determined that member-operated self-checkout kiosks were not delivering the throughput improvement they were intended to provide, and that the employee-operated prescan model would generate better speed outcomes at lower error rates with the Costco-specific cart and merchandise configuration that makes self-scanning challenging.

The Honest Mixed Reviews: What Employees and Members Are Actually Saying

The prescan system's early rollout has generated reactions that are genuinely divided — not between enthusiasts and critics in the way that most technology launches are, but between locations and contexts where the system is working as intended and locations where implementation challenges are generating frustration.

The positive reactions:

One TikTok user, Andy Shen, who is a self-described "Costco fanatic" online, explained that an employee prescans the items in a customer's cart before checkout, then the patron is set to pay. "This should be introduced in more stores and should make your experience a lot better," Shen said. BuzzFeed

The Chick-fil-A drive-through comparison that multiple members have made independently communicates what the system looks like when it works: organized, fast, and surprisingly pleasant. A member who arrives at the pay station with their entire cart already scanned and a total already calculated, who completes payment in eight seconds and moves on, has experienced a qualitatively different checkout interaction than anything Costco's traditional process has delivered.

The critical reactions:

In the CostcoEmployee subreddit, one user wrote that their store had recently implemented the system and "it is horrible here," adding that "it could work better but we just don't have the hang of it yet and nor do the members." Another echoed the sentiment, writing "Our GM is now bragging about how much better our prescan numbers but now lines are even worse and both members and employees are pissed." Parade

One employee vented: "I hate it. It usually ends up taking longer than just taking the stuff out of the basket and ringing it up at the register. At the register, I've had so many mistakes from the people prescanning. Missed items, double charges. Why does Costco hate technology that actually works?" Atomictrips

Another shopper described a firsthand experience where they got double-charged for a case of soda and had to wait for an associate to manually fix the error. So much for "eight seconds." Atomictrips

The accuracy concern — missed items and double charges — is the most substantive operational challenge the prescan system is generating in its early implementation. When the prescan works perfectly, the eight-second payment terminal experience is genuinely impressive. When it misses an item or double-scans a large product, the correction process at the pay station eliminates the speed advantage and generates member frustration.

One Reddit user in a Costco employee thread summed it up: "Pre-scan for registers works nicely because no one is itching to cut in front of you while you scan. Pre-scan for self checkout is an absolute ticking time bomb before members argue about cutting while you scan." Atomictrips

The queue management challenge — the specific confusion about who is being pre-scanned and whose turn it is in the queue — is the operational dimension of the prescan system that has generated the most interpersonal conflict in early implementation. When a prescan employee is working their way down a queue, members at different positions in the queue interact with the employee at different times, creating a perceived queue-jumping dynamic that can escalate when the social norms around the new system have not yet been established.

What This Means for Members: How to Navigate the Prescan System

For members shopping at Costco locations where the prescan system has been implemented, several practical strategies improve the experience:

Stay with your cart while in the queue. The prescan employee needs access to your cart's contents to scan accurately. Members who leave their cart unattended while browsing nearby displays during the checkout wait create scanning challenges for the prescan employee who arrives to scan their items.

Do not reorganize your cart while being scanned. The most consistent source of scanning errors is a member who rearranges items in their cart while a prescan employee is in the middle of scanning. If you pick up an item the employee has just scanned and move it, the employee may rescan it — generating a double charge that requires correction at the pay station.

Verify your total at the pay station before completing payment. The automated pay station displays your complete order total before you tap to pay. Take two seconds to verify the item count and total before completing the transaction — catching any prescan discrepancies at the pay station is significantly faster than resolving them at a customer service desk after the fact.

Use the Costco app's digital wallet for fastest payment. Members with the updated Costco app's digital wallet functionality can complete the pay station transaction with a single app tap — the fastest available payment method at the automated stations.

What to do if there is a scanning error: At the automated pay station, there is an employee present or immediately accessible for exactly this scenario. Flag the error before completing payment — the correction at the pay station is faster and simpler than a post-transaction correction.

The Bigger Picture: Why Costco Is Investing in Checkout Speed

The operational and commercial logic behind Costco's checkout technology investment is clear and significant:

The warehouse giant is betting it can solve the retail industry's biggest headache without losing the low-cost model that keeps its members loyal. MOJO

Checkout time is a direct function of member visit satisfaction and visit frequency. Members who experience fast, frictionless checkout are more likely to make additional warehouse visits between planned major shopping trips — the impulse top-up visit for a few items that the slow checkout historically discouraged. Faster checkout also increases the throughput of each warehouse location — more members processed per hour, more revenue per square foot, more efficiency from the same physical infrastructure.

The new prescan technology preserves everything Costco values about the human element while dramatically reducing the time cost that checkout has historically imposed on members. MOJO

The comparison to Sam's Club's Scan & Go — the competing technology that allows members to scan items themselves as they shop and skip the checkout line entirely — is unavoidable. Sam's Club's approach has generated strong adoption and genuine member enthusiasm for its frictionless checkout experience. Costco's prescan approach preserves the employee interaction that Costco's institutional culture values, rather than delegating the scanning responsibility to members — a philosophical choice that reflects Costco's view of the employee relationship and its aversion to the member service displacement that self-checkout represents.

Whether the prescan system will ultimately generate the checkout throughput improvements that Costco's investment case requires depends on execution quality that early implementation has not consistently demonstrated. The eight-second pay station transaction is real and impressive. The prescan accuracy that makes it possible needs continued refinement. The queue management protocols that prevent interpersonal conflict need standardization across all implementing locations.

The Costco that has held the hot dog at $1.50 for forty years through every commercial pressure imaginable is the same Costco that will iterate relentlessly on the prescan system until the eight-second promise is reliably delivered — not just in the best-case scenarios that early adopter members are celebrating on TikTok, but in every checkout lane at every warehouse location during every peak Saturday afternoon.

At MOJO Sales & Branding, we track every development in the Costco member experience — because the members who have a faster, smoother, more enjoyable warehouse visit are the members who spend more time in the aisles where the brands we represent are making their discovery.

Contact us at 732.433.7873 or Susan@MOJOSalesandBranding.com.

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