If you’re shopping for a time clock that actually stops buddy punching, you’ll eventually weigh two very different approaches: biometric clocks that scan a fingerprint or a face to confirm who is punching, and network controls like an office-IP lock that confirm where the punch is coming from. They sound like they solve the same problem. They don’t — and the difference is worth understanding before you put a face scanner on your wall.
Here’s the honest version of IP restriction vs. biometric time clock, including a straight answer we’ll give up front: Punchwell does not do biometrics. It uses an office-IP lock plus an optional GPS geofence. That’s a deliberate choice, and this post explains the reasoning rather than pretending we ship a feature we don’t.
What each one actually proves
The two controls answer different questions, and that’s the whole story.
- A biometric clock proves identity. A fingerprint or facial scan ties a punch to a specific person’s body, so a coworker can’t punch in for a friend who isn’t there. It answers who.
- An office-IP lock proves the network. Every internet connection has a public IP address; your workplace has one, or a known set. Flag an employee as office-only and the clock refuses any punch that doesn’t come from an allowlisted address. It answers where — specifically, “is this device actually on the office network?”
- A GPS geofence proves reported location — the phone’s claimed position against a radius around the work site. It answers where the phone says it is.
Biometrics are genuinely strong at the identity question. If your only concern were “could one person clock in as another,” a face scan is a direct answer. So why not just do that?
The costs biometrics carry that the marketing skips
Identity verification via the body comes with baggage that a network check simply doesn’t:
- You’re storing biometric data. Even when a vendor stores a mathematical template rather than a raw image, you’re now holding data derived from someone’s face or fingerprint. Unlike a password, a person can’t change their fingerprint after a breach. That makes a biometric database a uniquely sensitive thing to be responsible for.
- It’s legally regulated in ways ordinary attendance data isn’t. A number of jurisdictions treat biometric identifiers as a special category, with specific consent, notice, and retention rules. That’s a compliance surface you take on the moment you start collecting faces or prints — and getting it wrong is not a small matter.
- Consent isn’t always simple. Some staff object, on principle, to their employer scanning their body to let them start a shift. In a small, close team that friction can cost you more goodwill than the buddy punching did.
- It needs hardware and it fails in the real world. Scanners, cameras, lighting, wet or gloved hands, masks — biometric capture has real-world failure modes that bounce legitimate punches and generate support tickets.
Among SMB time clocks, facial recognition shows up in tools like Jibble. It’s a real feature and it works — but every one of the costs above rides along with it. (Competitor capabilities are approximate, as of June 2026 — confirm current features before relying on them.)
Why Punchwell deliberately chose IP + GPS instead
We looked at that trade and made a call: for the on-site buddy-punching problem, an office-IP lock closes the door that matters — punching in from home — without asking you to become the custodian of anyone’s biometrics.
That’s the reasoning behind Punchwell’s office-IP clock-in lock, our flagship control:
- It refuses an off-site punch server-side — it rejects the punch, it doesn’t merely log a location for someone to notice later. A device on someone’s home Wi-Fi cannot present your office’s public IP, so the from-home punch is genuinely blocked.
- The depth is unusual. Exact IPs, whole CIDR blocks (a range like
203.0.113.0/24), and address ranges, in IPv4 or IPv6 — set company-wide, per office, and per employee, unioned so access only ever widens. - It’s per employee, with block/warn/flag modes, so you can lock on-site staff to the building while leaving remote staff free, and be as strict or as gentle as you want.
- It reads one thing at one moment — the network address of the punch — and nothing about where a person is the rest of the day. There’s no camera, no scanner, and no immutable personal data sitting in a database waiting to be breached.
Paired with it, Punchwell offers an optional GPS geofence, kiosk, and mobile/PWA punch screen for teams that move between sites. And because Punchwell is self-hosted with no data call-home, whatever IP or location data you do collect stays in your own WordPress database rather than a vendor’s cloud. For a privacy-sensitive workplace — a clinic, a dental practice, an agency — “we never collect biometrics and your staff’s data never leaves your server” is often the more defensible posture, not the weaker one.
The honest limitation — and why it rarely matters on-site
We won’t pretend the IP lock does something it doesn’t. An IP check proves the punch came from your network; it does not prove which finger tapped the button. A person already inside the building could, in principle, still punch for a coworker standing next to them. Biometrics close that specific gap; an IP lock doesn’t.
But weigh what each problem actually is. The expensive, common form of time theft is people clocking in from home or the parking lot — and the IP lock ends that completely. The remaining “someone already on-site covers for someone else” case is smaller, socially riskier to attempt, and can be dampened with warn/flag modes, a clock-in time window, and ordinary floor supervision. For most on-site teams, closing the from-home door — without a face database — is the trade worth making.
So which should you choose?
A quick way to decide:
- You want identity proof at any cost and accept the compliance and privacy burden → a biometric clock answers who. Go in with eyes open about data storage, consent, and the law.
- Your real problem is on-site staff punching from home or covering shifts, and you’d rather not hold biometric data → an office-IP lock is the hard control for where, with none of the biometric baggage. Add GPS for staff who move between sites.
- You’re on WordPress and want to own the data → a self-hosted IP lock keeps everything on your server, at a flat price, with no per-seat fee.
Frequently asked questions
Is an IP lock or a biometric time clock better at stopping buddy punching?
They stop different halves of it. A biometric clock proves identity, so a coworker can’t punch as someone else — but it stores sensitive biometric data and carries specific legal and consent obligations. An office-IP lock proves the punch came from your network, which ends punching in from home entirely, without collecting anyone’s face or fingerprint. For most on-site teams the from-home problem is the costly one, so the IP lock is the practical hard control.
Does Punchwell have facial recognition or fingerprint scanning?
No. Punchwell deliberately does not do biometrics. It uses an office-IP clock-in lock plus an optional GPS geofence and kiosk. That choice avoids storing immutable biometric data and the regulatory surface that comes with it, while still refusing off-site punches server-side.
Aren’t biometrics more secure?
For confirming identity, biometrics are strong — but “more secure” cuts both ways. A breached password can be changed; a breached fingerprint or face template can’t. An IP lock reads only the network address of a punch, with nothing about a person’s body to store or leak, which for privacy-sensitive workplaces is often the safer posture overall.
The bottom line
Biometric clocks answer who; an office-IP lock answers where. Both can reduce buddy punching, but they carry very different costs — and for on-site teams whose real leak is punching in from home, the IP lock closes that door without asking you to become the keeper of anyone’s biometrics. That’s why Punchwell chose IP and GPS on purpose.
If you’re on WordPress, the calmest next step is to see how the office-IP lock works.
Punchwell is an independent, third-party maintained GPL fork of the “WP Human Resource Management” plugin. Sturdyhaus is not affiliated with, endorsed by, or sponsored by wpspear, weDevs, the original author, or any other prior maintainer. Jibble and any other product names are referenced descriptively (nominative fair use); all third-party names and trademarks belong to their respective owners. Competitor features are approximate, as of June 2026 — confirm current capabilities before relying on them. This is not legal advice; biometric-data obligations depend on your jurisdiction and configuration.