Table 5 Survey structure for evaluation cycle III (SD = Standard Deviation, NA = No Answer)

Question group: an enhancement of the Corona-Warn-App

Usability

 Unpleasant–pleasant

1–7

5.49

6

1.28

 Dull–creative

1–7

4.87

5

1.49

 Inferior–valuable

1–7

5.66

6

1.41

 Boring–exciting

1–7

4.89

5

1.27

 Unpredictable–predictable

1–7

5.26

5

1.09

 Unintuitiv–intuitiv

1–7

5.42

6

1.42

 Complicated–simple

1–7

5.62

6

1.52

 Unsafe–safe

1–7

5.04

5

1.37

 Inefficient–effective

1–7

5.36

6

1.46

 Confusing–clear

1–7

5.58

6

1.42

 Cluttered–tidy

1–7

5.70

6

1.38

Is the level of detail for risk contacts sufficient?

1–7

5.19

6

1.24

Would you prefer to get more details about a risk contact?

1–7

4.83

5

1.72

Would you be willing to accept privacy restrictions yourself for more details about risk contacts?

1–7

5.23

6

1.67

Question group: Scenario 1 Crowd of people

Yes

No

NA

Did you understand the feature?

Yes/No/NA

96.23%

3.77%

0%

Did you find the feature helpful?

Yes/No/NA

83.02%

17.88%

0%

Question group: Scenario 2 Mask obligation

Yes

No

NA

Did you understand the feature?

Yes/No/NA

100.00%

0%

0%

Did you find the feature helpful?

Yes/No/NA

90.57%

9.43%

0%

So, understanding how GPS coordinates can help you perform other functions of the app, would you accept the recording of your GPS coordinates?

Yes/No/NA

83.02%

11.32%

5.66%

Question group: Scenario 3 Corona test

Yes

No

NA

Did you understand the feature?

Yes/No/NA

100.00%

0%

0%

Would you be willing to save your test in the app?

Yes/No/NA

100.00%

0%

0%

Would you share your test with your contacts and health authorities?

Yes/No/NA

94.34%

1.89%

3.77%

In the following, you can share your reasons for not wanting to share your Corona test with contacts or health authorities through the app

Free text field

Have you already been tested during the pandemic?

Yes/No/NA

39.62%

60.38%

0%

Regarding your test:

Did you receive the test result via in your app?

Yes/No/NA

42.86%

57.14%

0%

Did you share the test result to met people via the app (or in case of a negative test: would you have shared a positive test result)?

Yes/No/NA

76.19%

23.81%

0%

Question group: Scenario 4 Vaccination

Yes

No

NA

Did you understand the feature?

Yes/No/NA

94.34%

3.77%

1.89%

Would you be willing to save your vaccination in the app?

Yes/No/NA

94.34%

3.77%

1.89%

Would you share it with health authorities?

Yes/No/NA

90.57%

5.66%

3.77%

In the following, you can share your reasons for not wanting to share your vaccination with health authorities through the app

Free text field

Question group: Personal and closing questions

Average

Median

SD

How old are you?

18–24, 25–34, 35–44, 45–54, 55–64, 65–74 years old, older than 74

29.95

29.5

9.14

Yes

No

NA

Do you own a smartphone?

Yes/No/NA

100.00%

0%

0%

Do you use the current Corona-Warn-App?

Yes/No/NA

86.79%

9.43%

− 3.78%

Average

Median

SD

Do you find the current Corona-Warn-App useful?

1–7

4.27

5

1.27

Please answer the following questions regarding the advanced Corona-Warn-App presented here

… the extension of the app is useful

1–7

6.04

6

1.18

… the service provider of this App is trustworthy

1–7

5.58

6

1.23

… sharing my data with the Corona-Warn-App involves a high privacy risk for me

1–7

3.36

3

1.78

… in the future, I would use the Corona-Warn-App if it includes the features presented here

1–7

5.94

6

1.41

… I would record other vital parameters (pulse. stress level. etc.) in the Corona-Warn-App if this would create additional functionalities

1–7

3.83

4

1.86

Yes

No

What sources of information do you use to stay up to date on the pandemic?

Family

50.94%

49.06%

Friends

49.06%

50.94%

Job

33.96%

66.04%

TV news

71.70%

29.30%

Radio news

52.83%

47.17%

Newspaper

45.28%

54.72%

Social media

62.26%

37.74%

Podcast

16.98%

83.02%

Youtube

5.66%

94.34%

Do you have further suggestions for improving the prototype?

Free text field