A SmartLock vs Apple AirTag decision really comes down to one question: do you want to lock the bag and track it from one device, or just track it and lock it separately? Both ride on Apple’s Find My network, so both can show a checked bag on a map from the other side of the country.
Your suitcase rolls off down the belt at the gate, and somewhere between two connections it doesn’t come out the other end. You want two things in that moment: to know where the bag is, and to know nobody has been through it. A tracker answers the first. A lock answers the second.
The SmartLock is the pick if you want both jobs in one gadget: it’s a TSA-approved combination lock with Apple Find My tracking built into the body. The Apple AirTag is the specialist tracker, with Apple’s sharpest close-range finding, but it doesn’t secure anything.
We compared the two on locking, how each one finds a lost bag, battery, price, and what you actually end up carrying. Here’s the split, round by round.
SmartLock vs Apple AirTag at a glance
| Feature | SmartLock | Apple AirTag |
|---|---|---|
| Price (single) | $29.99 | $29 ($99 for four) |
| What it is | TSA lock + tracker | Tracker only |
| Locks the bag | Yes, 3-digit combo | No |
| Tracking network | Apple Find My | Apple Find My |
| Close-range finding | Map + play sound | U1 Precision Finding |
| Battery | Replaceable coin cell (tracker only) | CR2032, ~1 year |
| Works with Android | No (Apple only) | No (Apple only) |
| Warranty | 2-year | Standard Apple |
| Our score | 9.2 / 10 | 8.7 / 10 |
Two Find My devices, one big difference

Start with what they share, because it matters. Both the SmartLock and the Apple AirTag report their location through Apple’s Find My network, the same anonymous, encrypted relay of Apple devices. Drop either one in a checked bag and it can surface on a map when it passes anywhere near an iPhone, which at an airport is constantly.
The difference is what each one is. The Apple AirTag is a tracker and nothing else. It’s a small tracker that finds things, and it does that better than almost anything, but it can’t lock a zipper. To secure the bag you’re also buying a TSA lock and threading two separate things onto your luggage.
The SmartLock is a TSA-approved combination lock with the tracker built in. You set a 3-digit code, loop it through the zipper pulls, and the same body that keeps the bag shut is the thing showing up in Find My. One device does the securing and the locating. That’s the whole pitch, and for a checked bag it’s a strong one.
Round by round
Locking the bag
Round winner: SmartLock
This one isn’t close, because only one of them locks. The SmartLock is a real TSA-approved combination lock: you set your own 3-digit code, and a screener can open and re-lock it with their master tool instead of cutting it off. That’s the entire reason a lot of people are shopping in the first place, and the AirTag simply doesn’t do it.
An Apple AirTag secures nothing. It’s allowed in checked luggage and it’s brilliant at telling you where the bag went, but a thief or a curious baggage handler opens an unlocked zipper in a second. If keeping the bag shut is on your list at all, this round is over before it starts.
The round goes to the SmartLock, by default and by design.
Pinpointing it up close
Round winner: Apple AirTagCredit where it’s due: this is Apple’s round. The AirTag carries the U1 ultra-wideband chip, which unlocks Precision Finding, the on-screen arrow and exact distance that walks you to a tag across a room. When a bag is somewhere in a crowded carousel hall, that directional guidance is genuinely useful, and Apple reserves the U1 chip for its own product.
The SmartLock locates through the Find My map and a play-sound alert rather than a directional arrow. For a checked bag you’re following city to city, the map is the part that matters, and the SmartLock has it. But for the last thirty feet, the AirTag’s arrow is sharper, and it would be dishonest to pretend otherwise.
If close-range hunting is your priority, the AirTag takes this one cleanly.
One device or two
Round winner: SmartLockHere’s where the SmartLock pulls the comparison back. Go the AirTag route and you’re carrying two things: a separate TSA lock to secure the bag and a tag to find it, two items to buy, attach, and keep track of. The SmartLock folds both into one gadget you loop on once.
There’s a real convenience dividend to that. Fewer parts to forget, one thing to attach, and the lock is mechanical, so it keeps working even if the tracking battery dies. You never end up with a secured bag you can’t locate, or a located bag anyone can open.
For the traveler who wants the whole job handled by a single device, the SmartLock wins this round.
Price and buying
Round winner: SmartLockOn the sticker, they look identical: the SmartLock lists at $29.99 and a single Apple AirTag is about $29. But the AirTag’s price is only half the setup, because you still have to buy a TSA lock on top of it. The SmartLock’s $29.99 already includes the lock, so you’re comparing one price against two.
The SmartLock also ships with a 2-year warranty and a replaceable battery, and it’s sold direct with a 30-day return window, so you can loop it on a real bag and send it back if it’s not for you. Buy direct, set your 3-digit code before you travel, and keep the confirmation email.
On real out-the-door cost for lock-plus-tracking, the round is the SmartLock’s.
What buyers say
The AirTag is one of the most trusted trackers made, averaging 4.8 out of 5 across more than 22,000 Best Buy reviews, and for pure finding it earns that. The SmartLock is a newer, more specialized device, so treat it as the lock-plus-tracker built for checked bags rather than a like-for-like AirTag replacement. Buy the SmartLock direct so the 2-year warranty and return window cover you.
What we liked
- SmartLock combines a TSA-approved 3-digit combination lock with Apple Find My tracking in one device
- SmartLock lists at $29.99 with a 2-year warranty, the price of a single AirTag but with the lock included
- AirTag adds U1 Precision Finding, the directional arrow that guides you the last few feet to the bag
- Both ride Apple's Find My network, so a checked bag surfaces on a map fast
What we didn't
- Only available online
Who should buy which
Choose the SmartLock if you want your checked bag both secured and trackable from one device: a TSA-approved combination lock with Apple Find My built in, a 2-year warranty, and a single price that already covers the lock. For most travelers who just want the bag shut and on the map, it’s the pick.
Choose the Apple AirTag if you mainly want a tracker for many things (keys, a backpack, a car) and you value U1 Precision Finding for close-range hunting, and you’re happy to add a separate lock when a bag needs securing.
Both live on Apple’s Find My network, so whichever you pick, your bag stops being a mystery the moment it passes another iPhone. If you like the idea of one clever gadget doing two jobs, the SmartLock is that gadget. For more from the same maker, see our KeySmart review, and for keeping your cards safe on the move, the best RFID-blocking cards and our home hub.
Check today's SmartLock price
