Generate a Code 128 barcode that types login credentials when scanned. The scanner enters username, TAB, password, ENTER — instant auto-login.
Use ⌘ + D to bookmark this toolA barcode scanner plugged into a computer acts as a keyboard — it "types" whatever is encoded in the barcode. By encoding username + TAB + password + ENTER into a single barcode, a scan fills and submits the login form instantly.
Code 128 (Code Set A) natively supports TAB (ASCII 9) and Carriage Return (ASCII 13), making it the ideal format for login barcodes. No special scanner configuration is needed.
| Step | Character | ASCII Code | Purpose |
|---|---|---|---|
| 1 | Username text | Varies | Types username into the focused field |
| 2 | TAB | 9 | Moves focus to the password field |
| 3 | Password text | Varies | Types password into the password field |
| 4 | CR (Enter) | 13 | Submits the login form |
The scanner outputs each character as a keyboard event. Most login forms respond to TAB and ENTER natively.
| Format | TAB/ENTER | Size | Scanner Support |
|---|---|---|---|
| Code 128A | Native ✓ | Compact | 100% |
| QR Code | Escape codes | Large | Mobile only |
| DataMatrix | Limited | Small | Industrial |
Code 128A is the only standard 1D barcode format that natively encodes TAB and ENTER as control characters, making it the best choice for login barcodes.
| Scanning Distance | Minimum Size | Use Case |
|---|---|---|
| 1–3 ft (1 m) | 1" | ID badges, desk labels |
| 3–6 ft (2 m) | 2" | Kiosk stands, POS terminals |
| 6–12 ft (4 m) | 3" | Warehouse doors, wall signs |
Download at the size matching your use case. Barcodes stay sharp when printed at the intended resolution.
Workers scan their badge barcode to log into inventory systems, picking terminals, and shipping stations. No manual typing means faster shift changes and fewer input errors.
Retail staff scan a barcode to sign into POS systems between shifts. Keeps things moving during busy hours and prevents mistyped credentials holding up the line.
Nurses and doctors scan credential barcodes to log into EHR systems and medication dispensing cabinets. Fast authentication is critical when every second counts.
Students and patrons scan a barcode on their ID card to log into shared workstations. Simplifies access management and eliminates forgotten passwords.
Generate strong, random passwords with customizable length, character sets, and options.
Generate strong, memorable passphrases from random words. Easier to remember, just as secure.
Create easy to remember passwords from random words or your own phrases with leet speak conversion.
Generate multiple unique passwords at once. Perfect for IT admins and account provisioning.
Generate cryptographically secure API keys, tokens, and secrets in multiple formats.
Generate strong, easy-to-share WiFi passwords for your home or office network.
Create a scannable QR code for your WiFi network. Guests connect instantly.
Extract the WiFi password from a QR code image. Upload or paste — no camera needed.
Generate cryptographically random PIN codes. Perfect for device locks and access codes.
Test how strong your password is. See estimated crack time, entropy, and suggestions.
Calculate the exact entropy of any password configuration. See bits, combinations, and crack times.
Generate MD5 hashes from any text. Useful for checksums, cache keys, and legacy system compatibility.
Generate SHA-512 hashes using the native Web Crypto API. 512-bit security for signatures and integrity.
Generate passwords optimized for TVs, game consoles, and devices with on-screen keyboards. No symbols.
Generate speakable passwords from fake syllables. Easy to say aloud, type from memory, and share verbally.
Generate fun, memorable passwords children can actually remember. Word stories: red-panda-jumps-42.
Code 128 (Code Set A), which natively supports ASCII control characters like TAB (ASCII 9) and Carriage Return (ASCII 13). This is the standard format used by virtually all barcode scanners.
Barcode scanners act as keyboard input devices (HID). When the scanner reads the barcode, it 'types' each character as if someone pressed the keys. TAB moves the cursor to the password field, and ENTER submits the form.
It works with standard login forms where the username field is focused first, TAB moves to the password field, and ENTER submits. This covers most web and desktop login screens.
The password is encoded in the barcode pattern — not encrypted, but not human-readable either. You can toggle the human-readable text below the barcode on or off. Treat printed barcodes like you'd treat a written password.
Any USB or Bluetooth barcode scanner that supports Code 128 will work. Most commercial scanners (Honeywell, Zebra, Symbol) support Code 128 out of the box. The scanner must be in HID (keyboard emulation) mode.