For anyone who picks up the phone
Next time someone calls claiming to be your bank — make them prove it.
Scammers clone voices. They spoof numbers. They impersonate banks, delivery companies, even family members. Now you can challenge any caller to prove they are a real human in under 5 seconds — without hanging up.
Free to use. No app needed on their side. Works on any call, any device.
Get started free — takes 2 minutes →Free forever. No credit card. No app needed on the caller's side.
Incoming call
BBVA — Fraud Department
+34 900 123 456 · Claims urgent account issue
⚠️ Unverified caller
Number not in your contacts. Caller identity unconfirmed.
Challenge issued
You said: "Visit humansender.com and enter 4-4-1-8 into the code field."
Your challenge code
4418
They enter it at
humansender.com
Real human confirmed
Maria Lopez · BBVA Customer Service · Level 1 verified
As seen on
€1B+
Lost to phone scams in Europe each year
And growing as AI makes impersonation cheaper.
30s
To clone any voice with AI
Your bank, your boss, your family — anyone.
5 sec
To complete a live identity challenge
Send a link. They scan their face. You see the result.
0
Apps needed on the caller's side
They just open a link in any browser. That's it.
The problem
Anyone can claim to be anyone. Until now, you had no way to check.
Scammers have two options when they call you: hang up before you can verify, or convince you to trust them before you think to question it. Both work because until now, there was nothing you could do mid-call to confirm the person on the line is who they say they are.
Voice cloning has made this dramatically worse. It now costs under €10 and 30 seconds of audio to clone any voice. Your bank manager's voice. Your CEO's voice. Your son's voice.
Human Sender gives you a way to fight back — without hanging up, without being rude, and without needing any technical knowledge.
Calls people receive every day
Your bank's fraud department
High risk"We've detected suspicious activity. We need you to confirm your details." Is it really your bank — or a scammer with a spoofed number?
A delivery company (DHL, Correos, Amazon)
Very common"Your package is being held. Click this link or call us back to release it." A classic smishing and vishing combo.
A family member in trouble
Most harmful"Gran, it's me — I'm in hospital, I need money." AI voice cloning now makes this indistinguishable from the real person.
A company you deal with
Everyday"I'm calling from your energy provider / insurance company / telecoms." Anyone can claim to represent anyone.
How it works
Three steps. Works while you're still on the call.
01
Someone calls. You're not sure.
They claim to be your bank, a delivery company, a family member. Before you act on anything — open Human Sender and tap "Challenge this caller."
02
Read them your code — takes 5 seconds
Human Sender shows a 4-digit challenge code. Read it aloud: "Visit humansender.com and enter 4-4-1-8." They type it into any browser — no app, no account needed.
03
You see who they really are
Your screen shows their verified name and photo, whether they passed a liveness check, and whether they are who they claimed to be. In real time, while still on the call.
What you find out
Four things a scammer cannot fake.
Real human — confirmed
A live camera check confirms a real human face is behind the call. AI voice clones and bots cannot pass this.
Their verified name
If they've completed identity verification, you see their legal name — not just the name they told you.
Their employer
Verified users who work at a company can prove employer affiliation. "I'm from BBVA" becomes checkable.
Whether they refused
If they decline the challenge — that tells you something. Legitimate callers have no reason to say no.
Before / After
Same call. One has proof.
📞 Incoming: +34 900 123 456
Claims to be: BBVA Fraud Team
"We've detected suspicious transactions on your account. I need to verify your details and move your funds to a secure account..."
Your options: trust them, hang up, or call back. No way to know who you're really speaking to.
"I gave them my details. It wasn't really the bank."
📞 Incoming: +34 900 123 456
Claims to be: BBVA Fraud Team
You: "No problem — visit humansender.com and enter 4-4-1-8 into the code field."
Real human confirmed
Maria Lopez · Verified BBVA employee · Liveness passed
"It really was the bank. I could help them — knowing it was safe."
What people are saying
“My mother almost transferred €15,000 to a scammer pretending to be me. Now she sends every unknown caller a challenge link first. They always hang up.”
David R.
Set it up for his mother, Barcelona
“I got a call from someone claiming to be my insurance company. I sent the challenge link. They completed it. It really was them — and I was able to handle the claim without worrying.”
Ingrid T.
Freelancer, Amsterdam
“My team started getting calls from someone pretending to be our CEO asking for wire transfers. Now anyone asking for sensitive action has to pass a live challenge first.”
Álvaro M.
Finance Director, Madrid
Free forever
Set it up once. Use it every time someone calls.
Create your free account in under 2 minutes. Share your challenge link whenever you're not sure about a caller. You never have to wonder again.
Free
Forever for individuals
5 sec
To challenge a caller
0
Apps for the caller
Common questions
Everything people ask before getting started
Does the person calling me need to download an app?
No. You send them a link — via SMS, WhatsApp, or you read them the URL. They open it in any browser on any phone. The liveness check takes about 3 seconds and requires nothing to install.
What if the caller refuses to complete the challenge?
That tells you something important. A real bank, delivery company, or family member has no reason to refuse a 3-second identity check. Refusal is itself a clear signal to hang up and verify through official channels.
Can a sophisticated scammer fake the liveness check?
No. The liveness check uses passive biometric analysis — it detects micro-movements, skin texture, and depth cues that cannot be reproduced by a video replay, a photo, or an AI-generated image. Voice clones cannot pass it at all.
Does it work if the caller is from a company — like a bank or delivery firm?
Yes, and this is where it is most valuable. Verified Human Sender users who work at a company can prove their employer affiliation. "I'm from BBVA" becomes a checkable claim, not just a statement.
Is Human Sender free?
Yes. Free for individuals, forever. No credit card, no subscription. Create an account, verify yourself with a quick liveness check, and start challenging callers within 2 minutes.
Take back control
The next call could be a scammer. Now you have a way to know.
Free forever. No app needed on their side. Set up in 2 minutes.
Get started free →No credit card. No trial period. Free forever for individuals.