• Japan: share of mobile device users who shared birthday online by age

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According to a survey conducted in December 2019, around 46 percent of Japanese smartphone and tablet users aged 70 years and above had disclosed their date of birth online. People in their sixties and seventies were the most likely to share their birthday on the internet. A breakdown of all surveyed types of information showed that the most commonly disclosed information among respondents was the user's gender.

Share of mobile device users who disclosed their date of birth on the internet in Japan as of December 2019, by age group

	Share of respondents
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Source

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Source

Release date

March 2020

More information

Region

Japan

Survey time period

December 5 to 16, 2019

Number of respondents

5,000*

Age group

13 years and older

Special properties

among smart device users**

Method of interview

Online survey

Supplementary notes

*Sample size of age groups:
13 to 19 years n=453
20 to 29 years n=817
30 to 39 years n=941
40 to 49 years n=1,134
50 to 59 years n=853
60 to 69 years n=563
70 years and above n=239

**Smart devices included smartphones and tablets.

Original question: "Have you registered or publicized your personal information (full name, date of birth, etc.) or private information (place of origin, academic background, hobbies, etc.) as information for things such as an internet service profile? Please choose those answers that apply."