Statistics

The following statistics are only preliminary results of the ongoing study and updated hourly.
Please note that the numbers may change over time, for example, due to data cleansing or change of attributes used for fingerprints.

Study

Measurements

167,383
Number of measurements of browser attributes during study

Participants

2,534
Number of participants with at least one measurement




Year Measurements Active participants
2016 28,370 1,501
2017 51,711 1,256
2018 38,675 921
2019 34,016 789
2020 14,611 566
Number of collected measurements and active participants grouped by year.

Average

415.7
days

Median

148.0
days

Lower quartile

21.8
days

Upper quartile

660.3
days

Average

66.1
Measurements

Median

13.0
Measurements

Lower quartile

5.0
Measurements

Upper quartile

57.0
Measurements




Fingerprints

Average

14.5
Fingerprints

Median

5.0
Fingerprints

Lower quartile

2.0
Fingerprints

Upper quartile

14.0
Fingerprints

Unique
fingerprints

87.8%
Share of fingerprints that are unique amongst participants

Trackable
fingerprints

44.8%
Share of fingerprints that are both unique and stable over time

Participants
with unique fingerprints

81.2%
Share of participants that have at least one fingerprint
that is unique amongst all participants

Participants
with trackable fingerprints

69.5%
Share of participants that have at least one fingerprint
that is both unique and stable over time


Stability of trackable fingerprints

Average

53.1
days

Median

28.1
days

Lower quartile

10.1
days

Upper quartile

63.2
days



Avg. stability of trackable fingerprints per participant

Average

54.9
days

Median

34.6
days

Lower quartile

14.1
days

Upper quartile

70.1
days



Max. stability of trackable fingerprints per participant

Average

168.1
days

Median

63.1
days

Lower quartile

20.7
days

Upper quartile

197.4
days

Demographics of participants