How DirectFileTransfer Keeps Your Files Secure Without Slowing You Down

Security and speed are usually trade-offs. More security means more friction — logins, approval dialogs, confirmation prompts. DirectFileTransfer proves that's a false choice. Here's how we keep your files secure while making the transfer experience as fast as possible.

PIN-Based Access Control

Every transfer session is protected by a unique 8-digit PIN. Only someone with the PIN (or QR code) can connect to your session. PINs are generated fresh for each room and expire when the session ends.

Unlike a shared link that anyone could stumble upon, the PIN acts as a lightweight access token. Share it via a separate channel — text message, phone call, in person — and only the intended recipient can connect.

Device Verification

When someone connects, you immediately see their device info — browser, operating system, and a verification code. Both sides see the same verification code, so you can confirm you're connected to the right person with a quick check.

Expecting your colleague on Chrome/Windows? If you see Safari/iOS instead, you know something's off before any files are transferred.

Password Protection

For sensitive transfers, you can set a password on your room. The receiver must enter the correct password before they can connect — adding a second factor on top of the PIN.

This is especially useful when sharing the PIN over a channel you don't fully trust (email, group chat). Even if someone intercepts the PIN, they still need the password.

End-to-End Encryption

Every WebRTC data channel is protected by end-to-end encryption. Unique keys are generated per session. Your files are encrypted before they leave your device and decrypted only on the recipient's device.

Our signaling server coordinates the connection but never sees file data. Once the direct connection is established, the server is no longer involved.

Same-Network Transfers: Data Never Leaves Your Network

When both devices are on the same WiFi or LAN, WebRTC routes data directly over the local network. Your files never touch the internet.

• This means:
• Zero internet usage — your ISP never sees the data
• LAN speeds — typically 10-50 MB/s depending on your network
• Maximum privacy — data physically stays within your network

Transferring files between your phone and laptop on the same WiFi? DirectFileTransfer is faster than most native sharing solutions.

How We Compare

Security Without Friction

The key insight: security doesn't have to mean more clicks. DirectFileTransfer protects every transfer with encryption, PIN access, and device verification — but the experience is still pick files → share PIN → done.

No logins. No approval dialogs. No confirmation prompts. Just secure, direct file transfers.

Try it free at directfiletransfer.com.