Biometric Safes: Fingerprint Locks, Smart Safes and the Backup

A biometric safe opens with a fingerprint

A biometric safe uses a fingerprint reader as its lock. You enroll your prints during setup, the lock stores them, and the door opens when an enrolled finger touches the sensor. A fingerprint safe and a biometric safe are the same thing; a biometric safe with fingerprint lock is just the long way of saying it.

Most biometric safes for home also have a second way in: a key, a keypad code, or both. That backup is not optional. Sensors fail, batteries die, and fingers get cut.

This page covers home safes, not gun safes: personal safes, safe boxes, wall safes, fire-rated safes and jewelry safes with a fingerprint lock, including app-connected smart safes. For firearms, see our biometric gun safes page, which covers the gun-specific recalls in detail.

Smart safes and Wi-Fi safes

A smart safe for home usually means one with an app. Depending on the model, the app may log openings, send alerts when the door opens, or manage temporary codes. A Wi-Fi safe connects to your home network for the same features.

The useful question is what still works when the app doesn't. A smart safe box should open with its fingerprint reader, keypad or key whether or not your phone, router or the maker's servers are working. If the listing doesn't say, the manual will.

Who a biometric safe suits, and who should skip it

A biometric safe for home makes sense when quick, frequent access matters more than anything else.

Good fits:

• daily access to medication, cash or keys
• someone who struggles to remember or enter codes
• a household where only one or two adults should open it, and a shared code tends to spread
• a small safe by the bed or desk for things you use often

Skip it if:

• You open the safe a few times a year. A keypad, key or dial does the same job, with fewer parts.
• Your fingers are often wet, cut, dirty or very dry. A keypad doesn't care.
• Fire is the main threat. A fingerprint lock says nothing about fire. Pick by fire rating first; our fire-rated home safes page starts there.
• You'd lose the backup key. Every biometric safe falls back to it.

What to look for in a biometric safe: the reader, the backup and the power

The fingerprint reader gets the photos. The backup and the battery do the quiet work. A good biometric listing tells you about all three. A thin one tells you the safe is "smart." Fingers have bad days too: paper cuts, dry winter skin, a weekend of yard work. Plan for them.

Fingerprint capacity and enrollment

• How many prints it stores. Enroll more than one finger per person, including one from each hand.
• Who can enroll new prints. Some locks have an admin print or code required to add users. That keeps a curious household member from adding their own.
• How you delete a print. Check the manual. You'll need it if someone moves out.

The backup: key, code or both

• Backup key. Simple. Keep it away from the safe and out of children's reach.
• Keypad code. No key to lose. Change the default code at setup.
• Biometric safe with key and keypad. Two backups cover the most failures.

Power and the battery

Check where the batteries sit and how you replace them. If the battery compartment is inside the safe, a dead battery means the backup key is the only way in. Some safes have external terminals or a port to power the lock from outside. Our guide to opening a digital safe without the code covers what owners can do.

Size and build

• Small safe fingerprint models and portable biometric safes are light. Look for a cable or mounting holes.
• Large biometric safes are often fire-rated home safes with a fingerprint lock added. Judge the fire rating on its own terms: time, temperature or UL 72 class, and who tested it.
• Biometric safe locker and smart safe shelf listings are usually small units for offices, dorms or shared homes. Read the dimensions; the names vary.

Lock ratings

UL rates locks separately from the safes they sit in. UL 768 covers mechanical combination locks and does not cover electronic locks. UL 2058 is UL's outline for high-security electronic locks. If a listing says the lock is "UL listed," ask which standard. It's a fair question, and the answer should be in writing.

Are biometric safes reliable? What the recalls show

This section covers product recalls, so it's plain.

Fingerprint locks have been the subject of several Consumer Product Safety Commission recalls and warnings since 2023. The common hazard was the same: the lock could open for fingerprints that had not been enrolled.

• Machir biometric personal safes. On February 22, 2024, Machir recalled about 24,820 biometric personal safes because the biometric lock could fail and be opened by unauthorized users. CPSC reported 15 reports of unauthorized opening and no injuries.
• Biometric gun safes. Multiple recalls and warnings have covered biometric gun safes from several brands, including a recall of about 61,000 Fortress Safe units in October 2023 and a January 2025 CPSC warning covering about 183,000 Stack-On biometric gun safes, pistol vaults and lock boxes. Our biometric gun safes page lists them.

What this means for a buyer:

• check the model number against CPSC's recall pages before you buy and after
• after setup, try an unenrolled finger and confirm the lock stays shut
• keep firearms and dangerous medication in a safe whose lock you've checked, with the backup secured

Biometric medicine safes

A biometric medicine safe keeps prescriptions behind a fingerprint. CDC's Up and Away campaign says medicines and supplements should be kept out of reach and sight of young children. A locked safe adds to that. It doesn't replace putting the safe somewhere high and out of sight, and it only works if the lock rejects unenrolled fingers.

Biometric vs keypad safe: speed against simplicity

Biometric vs digital safe is the most common comparison, and the honest answer is that many safes are both.

• Biometric. Fastest for enrolled users. No code to share or forget. Depends on a sensor reading a finger, and on the lock rejecting everyone else.
• Keypad (digital). Works with gloves, wet hands or cuts. A code can be shared, watched or written on a sticky note.
• Combination dial. No batteries. Slowest to open.

The biometric vs combination question for gun safes has a firearm-specific angle: see our biometric gun safes page. For home safes, a fingerprint reader with a keypad backup gives you speed and a fallback in one lock. Our digital safes page lists keypad-only models.

How to read the biometric safe table

The table lists every home safe we track with a fingerprint lock. It excludes gun safes. A dash means the value isn't confirmed by the manufacturer or the listing.

To narrow it:

1. Size first. Check interior dimensions against the largest thing you'll store.
2. Backup type. Prefer a key, a keypad code, or both.
3. Fingerprint capacity. Count the people who need access, times two fingers each.
4. Fire rating, only if it matters, with the lab named.

The best biometric safe for home is the one whose backup you'll still have in five years. Specs in the table come from listings and manufacturer pages; we don't publish star ratings or our own reviews.

Enroll, test, then hide the key

Once the safe arrives, enroll at least two fingers per person, try a finger that isn't enrolled, and confirm the lock stays shut. Change any default code. Then put the backup key somewhere away from the safe, and check the price on the model that passed your list.