Secure Scanning: MFP Authentication with Badge, PIN & Smartphone

Q: Which authentication method is the most secure?

Each method has its strengths. NFC/RFID badges offer the best balance of security and convenience. PIN codes are secure but slower. Smartphone authentication offers additional factors such as biometrics. The most secure option is combining two methods (e.g. badge + PIN), which is recommended in high-security environments.

Q: What are personalised scan profiles?

After authentication at the MFP, each user sees their individual scan destinations and settings. An accounting employee sees options such as incoming invoices, outgoing invoices and receipts. A lawyer sees their client files. Profiles are centrally managed and automatically linked to the user account.

Q: Which card reader types are supported?

Docuflair supports a wide range of NFC and RFID card readers. Common technologies include MIFARE (Classic, DESFire, Plus), HID iCLASS, LEGIC and EM4200. Card readers connect directly to the MFP or via USB. Existing employee badges can be reused in most cases.

In many organisations, the multifunction printer sits in the corridor — freely accessible to every employee, visitor or cleaning staff. What seems practical is problematic from a data protection perspective: without authentication, anyone can scan, copy and access stored documents. There is no traceability of who digitised which document and when.

GDPR Article 32 requires technical and organisational measures to protect personal data. An open MFP without access control cannot meet this requirement. Authentication at the MFP is therefore not an optional convenience feature but a necessary security measure.

This article presents the most common authentication methods, compares their strengths and shows how personalised scan profiles simplify daily work.

The Problem: Open MFPs Are a Security Risk

Why access control at the multifunction printer is essential

A multifunction printer without authentication carries several risks:

No traceability: Who scanned or copied which document and when? Without user identification there is no audit trail — a problem during data protection incidents and audits.
Unauthorised access: Confidential documents left in the output tray or accidentally scanned to the wrong folder can be viewed by unauthorised persons.
Missing assignment: Scan jobs end up in a generic folder. Employees must manually search for their documents — time-consuming and error-prone.
GDPR violation: GDPR Art. 32 requires technical measures to ensure confidentiality. An unprotected MFP where personal data is scanned cannot fulfil this requirement.

The 4 Authentication Methods Compared

Each method has its strengths — the right choice depends on your requirements

1. NFC/RFID Badge (Contactless)

The employee holds their ID card or badge against the card reader on the MFP. In under one second they are authenticated and see their personal scan profiles on the display. NFC/RFID authentication is the most widely used method in organisations, as it utilises the existing employee badge that most people carry anyway.

Advantages: Fast (under 1 second), convenient, no password required, existing badges reusable.

Disadvantages: Badge can be lost or stolen, card reader hardware required.

2. PIN Code

The user enters a personal PIN code on the MFP touchscreen. This method requires no additional hardware and suits environments where no badge system exists.

Advantages: No hardware needed, easy to set up, cannot be physically lost.

Disadvantages: Slower than badge, PIN can be observed, input error-prone.

3. Smartphone App

The user authenticates via an app on their smartphone — by scanning a QR code on the MFP display or via Bluetooth/NFC. Modern variants combine this with biometric authentication (fingerprint or Face ID) on the smartphone.

Advantages: No additional badge needed (BYOD), extra security through biometrics, modern user experience.

Disadvantages: Smartphone must be charged and on hand, app installation required, privacy concerns with personal devices.

4. Username and Password

The classic method: the user enters their username and password on the MFP touchscreen. Typically used as a fallback when badge or smartphone are unavailable.

Advantages: Universally deployable, no hardware needed, LDAP/Active Directory integration possible.

Disadvantages: Time-consuming (touchscreen input), password can be forgotten, less user-friendly.

Criterion	NFC/RFID Badge	PIN Code	Smartphone	Username/Password
Speed	Very fast (<1s)	Medium (3-5s)	Fast (2-3s)	Slow (10-15s)
Security	High	Medium	Very high (with biometrics)	Medium
Convenience	Very high	Medium	High	Low
Hardware	Card reader required	None	None (smartphone available)	None
Use case	Enterprises, government	Small offices	Modern workplaces	Fallback method

Personalised Scan Profiles: Each User Sees Only What They Need

How authentication simplifies the scan workflow

The true value of authentication extends far beyond security. After logging in at the MFP, each user sees their individual scan profiles — tailored to their role, department and daily tasks:

Accounting: Incoming invoices, outgoing invoices, receipts, bank statements
Legal department: Client files (sorted by client), briefs, contracts
HR department: Applications, personnel files, references
Management: Personal filing, confidential documents

Each profile defines not only the destination folder but also scan settings such as resolution, colour mode, file format and file name. The user simply selects the appropriate profile on the MFP display and presses Start — the software handles the rest.

Real-world example: A tax advisory firm with 30 employees has set up personalised profiles for each tax advisor. After badge scanning at the MFP, the advisor sees their client list on the display. They select the client, insert the documents and press Start. The scans automatically land in the correct client file on the server — correctly named, in the right format, without a single manual step at the PC.

Audit Trail: Every Scan Operation Traceably Documented

Compliance evidence for GDPR, ISO 27001 and internal audits

With authentication at the MFP, every scan operation is automatically logged. The audit trail contains:

Who: Username of the authenticated employee
When: Timestamp of the scan operation
What: Number of scanned pages and file name
Where to: Destination folder or target system
How: Scan settings used (resolution, format, colour mode)

This audit trail is relevant not only for GDPR but also for ISO 27001, BSI IT baseline protection and industry-specific compliance requirements. In the event of a data protection incident, you can demonstrate who accessed which documents — and who did not.

Experience Secure Scanning with Docuflair

Docuflair Scan supports all common authentication methods and provides personalised scan profiles for every user. Schedule a free demo and see how simple secure scanning can be.

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Frequently Asked Questions

Answers to the most important questions about MFP authentication

Why is MFP authentication important for GDPR compliance?

GDPR Article 32 requires technical and organisational measures to protect personal data. An open MFP without authentication poses a risk, as any employee or visitor can access scan functions. Authentication ensures that only authorised persons can scan and a complete audit trail documents who digitised which documents and when.

Which authentication method is the most secure?