Micropauses Between Characters: How a 37ms Delay Reveals Automation

[BadB]

Analysis of the distribution of typing latency as a signal of human input

Introduction: Silence Between the Keys​

You've carefully configured Dolphin Anty:
- Canvas noise - 65%,
- WebGL renderer - ANGLE (Intel, D3D11),
- Behavior - natural pauses and cursor hesitations.

But when you fill out a form, you enter characters with a perfect 37ms latency.
This is what instantly identifies you as a bot.

Because real people don't type at a constant speed. Their fingers hesitate, hesitate, speed up and slow down. And fraud engines (Forter, Sift, Riskified) wait for these micro-irregularities as proof of humanity.

In this article, we'll explore why a "perfect" latency is a red flag, how to simulate natural micro-pauses, and how to turn your weaknesses into an advantage.

Part 1: Why a Perfect Latency Is a Sign of a Bot​

Cognitive stages of input in humans​

When a person types, his brain goes through three phases:

1. Symbol search - the eyes find the letter on the keyboard,
2. Finger movement - the hand moves towards the key,
3. Pressing and correction - the finger presses, sometimes making mistakes.

This process is nonlinear. It includes:

• Acceleration (between familiar letters),
• Slow down (before complex characters),
• Micropauses (0.1–0.5 sec before a new word).

Key insight:
Perfect delay is a sign of a lack of intelligence.
Because the mind doubts, hesitates, and accelerates.

Part 2: How Fraud Engines Analyze Input​

Behavioral Metrics (2026)​

Modern systems monitor dozens of parameters:

Metrics	Real user	Bot
Typing Speed	30–60 characters/min	200+ characters/min
Inter-key Delay	80–300 ms (variable)	35–40 ms (constant)
Pause Between Words	300–800 ms	0 ms
Error Rate	3–7%	0%

Example:
Email john.doe@gmail.com entered with a constant delay of 37 ms → fraud score = 95+

Part 3: How to simulate natural micropauses​

Types of delays​

Type	Example	Duration
Between the letters	j → o	80–200 ms
Before special characters	and → .	150–300 ms
Between words	doe → @	300–800 ms
After the error	johm → backspace	500–1000 ms

Rules for introducing delays​

1. Don't use a constant delay - vary it from 80 to 300 ms,
2. Lengthen pauses before special characters (@, ., _),
3. Add long pauses between words (300–800 ms),
4. Don't repeat the same pattern - variety is the key to believability.

Example:
Entering email:
j (120 ms) → o (90 ms) → h (150 ms) → n (200 ms) → . (400 ms) → d (100 ms)...

Part 4: Setting Up Dolphin Anty/Linken Sphere​

Human Emulation Settings​

Parameter	Recommended value	Why
Typing Delay	80–300 ms (random)	Simulates human variability
Word Pause	300–800 ms	Adds pauses between words
Special Char Delay	+100–200 ms	Lengthens pauses before @, ., _
Error Probability	5–7%	Corresponds to the actual level

Pro Tip:
Enable "Random Typing Delay" in Dolphin Anty - it will automatically add micropauses.

Part 5: Practical Example – Filling Out the Registration Form​

Step 1: The Name Field​

• J (100 ms) → o (120 ms) → h (180 ms) → n (250 ms).

Step 2: Email Field​

• j (90 ms) → o (110 ms) → h (140 ms) → n (200 ms) → . (400 ms) → d (100 ms) → o (120 ms) → e (150 ms) → @ (500 ms) → g (90 ms)...

Step 3: Password Field​

• P (100 ms) → @ (300 ms) → s (120 ms) → s (80 ms) → w (150 ms) → 0 (200 ms) → r (100 ms) → d (180 ms) → ! (400 ms).

Step 4: Confirmation​

• Before sending, there will be a 1-2 second pause for checking.

Result:
The fraud engine sees: “This is a person who doubts and checks” → trust is increased.

Part 6: Why Most Carders Fail​

Common Mistakes​

Error	Consequence
Constant delay	Looks like a script → high-risk score
Zero pauses between words	Lack of thought → ban
Identical patterns	Looks like a template → suspicion

Field data (2026):
Profiles with constant latency have a 4.2x higher fraud score, even with a perfect IP and device.

Conclusion: Perfection is the enemy of verisimilitude​

Fraud engines don't look for the "perfect" user. They look for a human being — with their doubts, hesitations, and micro-pauses.

Final thought:
True camouflage lies not in speed, but in irregularity.
Because in a world of machines, the best camouflage is being human.

Stay natural. Stay unpredictable.
And remember: in the world of fraud, pause is the breath of life.