Geslar
How to use Geslar Secure Send
Securely share passwords via an encrypted link with PIN protection and automatic expiration.
The problem: how to securely send a password?
How most people share passwords today:
"Hey, the Netflix password is Marko2024!" — sent via WhatsApp, Messenger, or email.
This means your password:
1. Stays in the chat history — forever
2. Syncs to all of the recipient's devices
3. Is potentially visible in backups
4. Can be read if anyone gains access to the chat
"Hey, the Netflix password is Marko2024!" — sent via WhatsApp, Messenger, or email.
This means your password:
1. Stays in the chat history — forever
2. Syncs to all of the recipient's devices
3. Is potentially visible in backups
4. Can be read if anyone gains access to the chat
Geslar Secure Send solves this problem. It creates an encrypted link that automatically expires and can only be opened once, with PIN protection.
How Secure Send works
Client-side encryption
The message is encrypted in your browser before it leaves your device. The server never sees the content in plain text.
PIN protection
The recipient must enter a PIN that you send via a different channel (SMS, phone call). Two channels = double protection.
Automatic expiration
The link automatically expires after a set time (1 hour, 24 hours, 7 days). After expiration — the data is permanently deleted.
One-time read
Optional: the message can be read only once. After the recipient opens the link — the content is permanently deleted from the server.
How to send a secure message
- Open Geslar Secure Send — available at geslar.app or in the Geslar application
- Enter the text you want to share (password, PIN, note, WiFi key...)
- Set a PIN to open the message (4-8 digits)
- Choose an expiration time — how long the link stays active
- Optional: enable one-time read — the link works only once
- Click "Generate link"
- Copy the link and send it to the recipient (email, chat, any channel)
- Send the PIN via a different channel — SMS or phone call
Key point: Never send the link and PIN via the same channel! If you send the link by email — send the PIN by SMS. If you send the link on WhatsApp — tell the PIN by phone. Two channels = security.
How to receive a secure message
- Open the link you received
- Enter the PIN that the sender gave you via a different channel
- The message is decrypted in your browser — the server does not see the content
- Copy the content and immediately save it in Geslar (or another password manager)
- If one-time read is enabled — the link will no longer work
The recipient does not need Geslar or any other software. Secure Send works in any browser — everything happens client-side.
When to use Secure Send
Sharing with a family member
Send a password for Netflix, WiFi, or a shared account to your partner or family member — without it staying in the chat forever.
IT support
Need to send someone access credentials for a server, CMS, or hosting panel? Secure Send is more secure than email or a ticketing system.
WiFi password for guests
Instead of writing the password on paper — send an encrypted link with automatic expiration. Clean and secure.
Banking details
Need to send someone an IBAN or payment details? A one-time link ensures the data doesn't stay in someone's inbox forever.
Security tips
Always use a PIN. Without a PIN, anyone with the link can read the message. With a PIN, they need both the link and the PIN — and you send them via different channels.
Use the shortest possible expiration. If the recipient reads the message right away — set the expiration to 1 hour. There's no reason for the link to stay active longer than necessary.
Enable one-time read for sensitive data. For passwords, PINs, and access credentials — always one-time read. Once read = permanently deleted.
Don't send the link and PIN via the same channel. If you send both on WhatsApp — you lose the advantage of dual-channel protection. Link by email, PIN by SMS. Link by chat, PIN by phone.
Conclusion
Sharing passwords is inevitable — but it doesn't have to be insecure. Secure Send transforms the "hey, the password is..." message into an encrypted, time-limited, PIN-protected link that self-destructs.
Free, no registration, works in any browser. The recipient doesn't need Geslar — just the link and the PIN.
Free, no registration, works in any browser. The recipient doesn't need Geslar — just the link and the PIN.
Try Secure Send — free and without registration.