// QUALITY & PANELS

Real people. Verified. Every market, every wave.

Certified panels, plus Zinklar Sentinel on top.

// ZINKLAR SENTINEL

Verified before, during and after.

Every panel and marketplace we use is ESOMAR-certified. On top of them runs Zinklar Sentinel, our own quality system that screens every respondent before, during and after each interview.

So the number you act on is built only on people who genuinely took part.

// THE SENTINEL PROCESS

Three checkpoints. Every respondent.

Reliable data isn't promised. It's filtered before a respondent starts, while they answer, and the moment they finish.

By the time fieldwork closes, you already have exactly the clean sample you needed.

01
Before they answer
Every respondent is screened before they reach the first question.
- Bot detection
  Bots are detected and removed through device-fingerprint analysis.
- Pre-survey deduplication
  Respondents are matched and de-duplicated before the survey opens, so no one enters twice.
- Duplicates & exclusions
  Device, IP and location data flag duplicates, and previous respondents are excluded to prevent repeat participation.
02
While they answer
We watch quality in real time as the interview runs.
- Open-end quality
  Content and response speed are analyzed, pasting is disabled, and copy-paste or AI-generated answers (e.g. ChatGPT) are detected.
- Trap questions
  Out-of-context questions catch disengaged respondents.
- Speeders & laggards
  Reading-time limits flag respondents answering too fast or too slow.
- Straightlining
  Repeated rating patterns across sub-questions reveal rushed completion.
- Overclaiming detector
  Unrealistic answers are flagged to exclude inattentive or fraudulent respondents.
03
When they finish
Every response is verified the moment it's submitted, not in a batch later.
- AI coherence check
  Large language models verify the logical coherence of every response.
- Fraud scoring
  Combined signals produce a fraud score; risky respondents are removed before the data reaches you.

// QUALITY AT THE SOURCE

The best filter is an engaged respondent.

Sentinel removes bad data. We also prevent it.

Short, mobile-first surveys keep people engaged, so answers are considered, not rushed.

Under 10 min
Short by design
Surveys average under 10 minutes, against a 20-minute industry standard, so respondents stay sharp to the last question.
Mobile-first
In the moment
Reaching people on their phones, as they go, gets spontaneous, candid answers and broader representativeness.