Review Article

Demystifying COVID-19 Digital Contact Tracing: A Survey on Frameworks and Mobile Apps

Table 4

List of the European deployed mobile app data management.

CountryApp nameData collection (server side)Data retention (h = hour, d = day, m = month, y = year)Data access (server side)

AustriaStopp Corona [56]UUIDs, smartphone numbers of infected users(i) UUIDs, smartphone numbers of infected users: 30 d (server)
(ii) UUIDs, encounter details: 14 d (smartphone)
Austrian Red Cross

BulgariaViruSafe [60]Smartphone number, personal ID number or passport number, age, gender, chronic illnesses, answers to personal status questions, location of the smartphone(i) All data stored for the duration of the state emergency periodMinistry of Health, authorised governmental institutions with a digital certificate, doctors

CroatiaStop COVID-19 [69]UUIDs of infected users, verification codes(i) UUIDs of infected users: unknown (server)
(ii) Verification codes: 14 d (server)
(iii) UUIDs, encounter details: 14 d (smartphone)
Ministry of Health

CyprusCovTracer [66]Geolocation data of infected users (last 2 weeks), name, address, date of birth, reason(s) of moving per occasion, phone number, email, password(i) All data stored for 1 yPersonal data only accessible by RISE, geolocation data shared with Cypriot epidemiologists

Czech RepubliceRouska [68]Smartphone numbers, encounter details of infected users(i) Smartphone numbers: 6 m
(ii) Encounter details of infected users: 12 h
(iii) Data on smartphone: 30 d
Ministry of Health, regional health authorities

DenmarkSmittestop [72]NemIDs and UUIDs of infected users(i) NemIDs of infected users: 24 h (server)
(ii) UUIDs of infected users: 14 d (server)
(iii) UUIDs, encounter details: 14 d (smartphone)
Danish Agency for Patient Safety

EstoniaHoia [74]UUIDs of infected users(i) UUIDs of infected users: 14 d (server)
(ii) UUIDs, encounter details: 14 d (smartphone)
Estonian Health Board, Health and Welfare Information Systems Centre

FinlandKoronavilkku [77]UUIDs of infected users(i) UUIDs of infected users: until 31/03/2021 (server)
(ii) UUIDs, encounter details: 14 d (smartphone)
Social Insurance Institution of Finland

FranceStopCovid [79]UUIDs, encounter details of infected users(i) Encounter details of infected users: 15 d
(ii) All other data: not more than 6 m after the end of the health emergency state
Outscale

GermanyCorona-Warn-App [84]UUIDs of infected users, test results(i) UUIDs of infected users: 14 d (server)
(ii) Test results: 21 d (server)
(iii) UUIDs, encounter details: 14d (smartphone)
Deutsche Telekom, SAP Deutschland

HungaryVirusRadar [88]UUIDs, smartphone numbers, encounter details of infected users(i) UUIDs, smartphone numbers: as long as required (server)
(ii) Encounter details of infected users: 30 d
(server)
(iii) UUIDs, encounter details: 14 d (smartphone)
National Center for Public Health, Government Informatics Development Agency

IrelandCOVID Tracker [90]UUIDs of infected users, smartphone numbers (optional)(i) UUIDs of infected users: 14 d (server)
(ii) UUIDs, encounter details: 14 d (smartphone)
(iii) Smartphone numbers: as long as needed
Health Service Executive, NearForm, Twilio

ItalyImmuni [93]UUIDs, encounter details of infected users, operational data(i) All data: until 01/12/2020Ministry of Health, Sogei S.p.A.

LatviaApturi Covid [95]UUIDs, encounter details of infected users(i) UUIDs, encounter details: 14 d (smartphone)
(ii) all data stored on server for the required time needed by law
SPKC, anonymised data accessible for epidemiological research

NetherlandsCoronaMelder [98]UUIDs of infected users(i) UUIDs of infected users: 14 d (server)
(ii) UUIDs, encounter details: 14 d (smartphone)
Minister of Health, Welfare and Sport, Municipal Health Services

NorwaySmittestopp [103]UUIDs, smartphone numbers, age, GPS location, operating system, version number and phone model, encounter details(i) All personal data: until 01/12/2020
(ii) GPS data and encounter details: 30 d
Ministry of Health, anonymised data accessible to the Institute of Public Health, authorised personnel

PolandProteGO [104]UUIDs of infected users(i) UUIDs of infected users: 14 d (server)
(ii) UUIDs, encounter details: 14 d (smartphone)
Ministry of Digital Affairs

PortugalStayAway Covid [108]UUIDs of infected users(i) UUIDs of infected users: 14 d (server)
(ii) UUIDs, encounter details: 14 d (smartphone)
Ministry of Health

SlovakiaZostanZdravy [111]UUIDs, smartphone numbers of infected users, encounter details of infected users(i) All data stored for the duration of the state emergency period
(ii) Smartphone numbers: 180 d
(iii) Encounter details of infected users: 21 d
Slovak government, health authorities

SloveniaOstaniZdrav [113]UUIDs of infected users, Covid codes(i) UUIDs of infected users: 14 d (server)
(ii) teleTAN codes: 21 d (server)
(iii) UUIDs, encounter details: 14 d (smartphone)
National Institute of Public Health, Ministry of Public Administration

SpainRadarCOVID [116]UUIDs of infected users(i) UUIDs of infected users: 14 d (server)
(ii) UUIDs, encounter details: 14 d (smartphone)
Spanish government

SwitzerlandSwissCovid [119]UUIDs of infected users, Covid codes(i) UUIDs of infected users: 14 d (server)
(ii) Covid codes: 24 h (server)
(iii) UUIDs, encounter details: 14 d (smartphone)
Federal Office of Public Health, anonymised data accessible to the Federal Statistical Office