Locality and Privacy in People-Nearby Applications Mike Lin UbiComp’13, September 8–12, 2013, Zurich, Switzerland.

Locality and Privacy in People-Nearby Applications

Mike LinUbiComp’13, September 8–12, 2013, Zurich, Switzerland

Outline

AuthorsIntroductionRelated worksPeople-Nearby ApplicationsMethodologyDiscussionComment

Authors

Eran TochLecturerDepartment of Industrial Engineering, The Iby and Aladar Fleischman Faculty of Engineering , Tel Aviv University.

Authors

Lab and Research Group at Tel Aviv UniversityJunior Faculty - Cognitive Aspects of Human Factors, Quantitative Models of Human Performance at Tel Aviv University

Project Manager & Inter-Enterprise Process Management System Designer at IBMSecurity Staff at IAA

Outline

AuthorsIntroductionRelated worksPeople-Nearby ApplicationsMethodologyDiscussionComment

Introduction

People-Nearby Applications (PNAs)•For dating

•Grindr or Skout•For finding activity partners

•Highlight or Circle

Introduction

People-Nearby Applications (PNAs)•For dating

•Grindr or Skout•For finding activity partners

•Highlight or Circle

Introduction

People-Nearby Applications (PNAs)•For dating

•Grindr or Skout•For finding activity partners

•Highlight or Circle

Introduction

Badoo•175 million users

Skout •1 million new users every month

Grindr•4.1 million registered users

Introduction

•Two main contributions •Analysis of usage patterns•Connection of the physical realm and the digital realm

Introduction

• Circlehttp://www.youtube.com/watch?v=WYTT3FoKrMo

• SayHihttp://www.youtube.com/watch?v=utAfdLVByLI

Outline

AuthorsIntroductionRelated worksPeople-Nearby ApplicationsMethodologyDiscussionComment

RELATED WORKS

• Privacy in location-based social applications•Foursquare

•empirically explore emerging usage practices in the real world.

RELATED WORKS

• computer-mediated communication• certain language-based strategies to reduce uncertainty

RELATED WORKS

• Hybrid ecology• Dragon Quest 9

• interact with each other in an urban environment

Outline

AuthorsIntroductionRelated worksPeople-Nearby ApplicationsMethodologyDiscussionComment

PEOPLE-NEARBY APPLICATIONS

Focus•provide general means of communication between strangers

PEOPLE-NEARBY APPLICATIONS

•Badoo is a social network where you can meet new people.•Email, name, age,gender, sexual orientation

PEOPLE-NEARBY APPLICATIONS

•Banjo integrates the largest social networks to provide on-the-ground view.•Facebook login

PEOPLE-NEARBY APPLICATIONS

•Blendr -The new way to make friends nearby.•Birth date

PEOPLE-NEARBY APPLICATIONS

•Circle Social Radar to find your friends and contacts that are nearby.•Facebook login

PEOPLE-NEARBY APPLICATIONS

•Highlight -Fun, simple way to learn more about the people around you.•Facebook login

PEOPLE-NEARBY APPLICATIONS

•Grindr Grindr is the essential location-based app to meet gay, bi and curious guys for dating, socializing and friendship.•Nickname

PEOPLE-NEARBY APPLICATIONS

•SayHi SayHi can help you find new people nearby! •Nickname, sexual orientation, birthdate

PEOPLE-NEARBY APPLICATIONS

•Skout Instantly meet people near you or around theworld.•Sexual orientation,search radius

PEOPLE-NEARBY APPLICATIONS

Outline

AuthorsIntroductionRelated worksPeople-Nearby ApplicationsMethodologyDiscussionComment

METHODOLOGY

•100 KM or less from the interviewer.

•320 users were invited

•Interviewed 25 participants.

METHODOLOGY

Why do participants use the applications?

METHODOLOGY

’talking with new people’,’dating’, and ’making new Friends’

METHODOLOGY

Use of Location

”Of course that location is important. I want to find someone and meet her, so why should I waste time on just talking? I won’t talk with someone who is 200 kilometer away.” -Male

METHODOLOGY

Use of Location

I am here to meet people from Asia. I am interestedin the Far East.”-Female

METHODOLOGY

Use of Location

”I am here mainly to improve my English.”-Male

METHODOLOGY

Use of Location

”the location does tell me a little about them, their culture, their perception.” -Female

METHODOLOGY

Trust Approaches

“nothing can help me trust people in this application”-Female

METHODOLOGY

Trust Approaches

“is not particularly safe”-Female

METHODOLOGY

Trust Approaches

“I do not believe that you can find someone who can be trusted through this app”.-Female

METHODOLOGY

Trust Approaches

“Deception is very easy. Everybody can fill in fake details into their profiles.”- Male

METHODOLOGY

Trust Approaches

“Everybody wears a mask when they are online”-Female

METHODOLOGY

Trust Approaches

“Everything seems to be fake here. I do not think that I will be ablento meet someone here... I do not trust these apps very much.” -Male

METHODOLOGY

Trust Mechanisms

location, profile, chat and blocking.

METHODOLOGY

Trust Mechanisms

“Knowing the distance kind of helps me trust people.The feeling is that you can trust someone nearby as he or she are not total strangers.”-Male

METHODOLOGY

Trust MechanismsQuestion: Does location helps you trust other people?Answer: -Male

Yes, in a sense. Also, because they see where I am. If I am saying that I am somewhere near X and they see that its really so.On the other hand, its also possible to use [location] for deception by blocking it on the mobile.

.-Male

METHODOLOGY

Trust MechanismsQuestion: does the physical location [of the otherperson] affect your trust?Answer: -FemaleYes. The further away I am, the more I believe there is no chance of meeting that person.

METHODOLOGY

Trust Mechanisms

“I try to ask a lot of questions, and to request photos to see if the person is trustworthy or not.”-Male

METHODOLOGY

Trust Mechanisms

“A profile picture and a picture album mean that theperson is actually the person in the picture... Posts, vocabulary and location give an indication for intelligence and trust.”-Male

METHODOLOGY

Trust Mechanisms

“I ask some basic questions, and I continue to where it takes me. If I see that it [the chat] becomes harassing,I block right away.”-Female

METHODOLOGY

Privacy Management

•Recognizable picture•only 3 out of the 7 females exhibiting

•“I never give my [phone] number here or my Facebook [page].”-Female

METHODOLOGY

Application Usage Context

METHODOLOGY

Application Usage Context“I move them to Skype, with camera and all that.”-

Female

“Question: How do you make sure that someone is trustful?

Answer: -MaleFacebook. You cannot fake pictures with friends,and

friends’ comments and stuff like that.”

Outline

AuthorsIntroductionRelated worksPeople-Nearby ApplicationsMethodologyDiscussionComment

DISCUSSION

•Pseudo-anonymized identity schema•Public-hybrid ecology•Search radius:

•Average of 50km,Standard deviation of 20km.

Outline

AuthorsIntroductionRelated worksPeople-Nearby ApplicationsMethodologyDiscussionComment

COMMENT

Mark Zuckerberg -This is a map of all of the friendships formed on Facebook across the world. 2013/9/24

COMMENT

Radius:90km