Methodology
How a phone reveals clues about reliability.
Digital phenotyping models internal states (motivation, regularity, energy) from standard sensor signals, without ever prompting the user. Djob-Index applies it to a single question: how likely is this candidate to be reliable at work?
01
The worker installs the app
No test, no questionnaire, just a few preparation micro-tasks. The analysis runs in the background, with explicit consent, from Day 0, before the first shift. A first score takes about 14 days of signals.
02
Passive signals are measured
In everyday life, outside work: regularity of routines and of the day/night rhythm, movement and travel, phone-usage and communication habits. Never the content of messages or calls.
03
The Index is calibrated progressively in the field
Each signal is tested on an ongoing basis against real ratings from the Djob marketplace, our validation lab: after each shift, the manager rates the worker’s punctuality, steadiness of pace and alertness, communication and autonomy.
04
You check the score in one call
Integrated with your ATS or HCM, or via our portal. You look it up when you evaluate candidates. The score belongs to the worker and follows them everywhere.
The four signal families
Time discipline
Regularity of daily routines and of the day/night rhythm.
Responsiveness
Consistency of everyday exchanges, without ever reading their content.
Energy
Smoothness of everyday movement, studied as an indicator of alertness and physical energy.
Proactivity
Completion of preparation micro-tasks and uptake of instructions.
What we never collect: the content of messages, calls, photos or browsing. The microphone is not used. Location is reduced to regularity measures, never stored as a route.