How it works

One browser is too slow. A few dozen, working together, aren’t.

The TLSContact site has a hard rule: scan faster than every five minutes and you’re blocked. Here’s how a network of applicants beats that limit, legally and safely, while keeping your account protected.

POOL_LDN_FR· 6 of ~40 active scanners shown
LIVE
U-0418
0.0m
U-1207
0.8m
U-9931
1.7m
U-3344
2.5m
U-2210
3.3m
U-7651
4.2m
EFFECTIVE COVERAGE
every ~7 seconds
SLOTS / 24H
37

Live visualization of the UK → France scanning pool

The problem

Why F5 alone almost never works.

Reason 01

Scarcity.

In peak windows, demand exceeds supply for weeks at a time. Hundreds of applicants are waiting on the same slots.

Reason 02

Speed.

When a slot opens, it disappears in under 30 seconds. Manual refresh almost never catches one.

Reason 03

Rate limits.

TLSContact bans accounts that poll faster than every 5 minutes. You can’t simply refresh constantly.

The solution

The network effect, in numbers.

Every member scans every 5 minutes — exactly within the rate limit. We coordinate when each member scans so the network covers the page continuously.

20users
Effective coverage
every 15 seconds
60users
Effective coverage
every 5 seconds
300users
Effective coverage
every 1 second
~40today
Active scanners (UK → France)
every ~7 seconds — better than human reaction
Inside the extension

Watch your scans run, in real time.

The popup shows your next scan, the network’s current coverage, and a live feed of every slot detected by any member of your pool.

  • → Your scan slot, refreshing every 5 minutes
  • → Effective coverage from the rest of the pool
  • → Live feed of slot detections across the network
  • → Pause, resume, switch pool — all from the popup
tlscontact.com/visa/gb/london
V
V VisaReady
Scanning
PoolLondon → France
Network coverageevery ~7s
Your scan slot14:07:18 → 14:12:18
next scan in 3m 04s
Activity
14:02:18Scan complete — no slots
13:57:18Scan complete — no slots
13:54:42Slot detected by U-9931 · raced ↗
13:52:18Scan complete — no slots
13:47:18Scan complete — no slots
The booking moment

What happens in the 43 milliseconds after a slot opens.

T + 0ms

One member detects.

Some member’s 5-minute scan happens to land on the page right after a slot is released. Their browser sees it.

T + 8ms

Network is notified.

The detection is broadcast over WebSocket to every other member’s extension. Your popup updates instantly.

T + 43ms

The fastest browser books.

Every member’s browser races to claim the slot. Whoever’s tab is fastest at that millisecond wins. TLS gives you 30 minutes to pay them.

Ready to install? It takes two minutes.

Add to Chrome, sign in to TLSContact like normal, and the network does the rest.