Emailing a publicly available address posted by the same person I understand that emailing a person without consent is illegal under GDPR. But is it okay to email someone if the person has made the mail address public? For example if a university professor posted his/her email on the university website (which is publicly open without any login requirement). Is it okay to send them an email?
The GDPR doesn't generally distinguish public from non-public personal data. If you have a good reason to contact the professor, do send them an email. GDPR does not prevent this. If you're sending this email for “purely personal or household purposes”, then GDPR doesn't apply anyway. There are rules in the ePrivacy Directive against unsolicited emails, but these specifically relate to emails for direct marketing purposes. A company is not allowed to send out spam marketing, regardless of whether they obtained the email address from a public data source. Companies can send email marketing to their own existing customers, or to people who have given consent. Consent is defined in a fairly restrictive way (as a specific, informed, freely given, and unambiguous indication of the data subject's wishes), so that mere publication of an email address cannot be interpreted as consent to receive marketing from a particular company.
No. According to GDPR consent must be: Consent should be given by a clear affirmative act establishing a freely given, specific, informed and unambiguous indication of the data subject’s agreement to the processing of personal data relating to him or her, such as by a written statement, including by electronic means, or an oral statement Scrolling down is not a clear, affirmative, specific or unambiguous indication of consent, and therefore does not fulfill the requirements for GDPR.
This issue touches upon two distinct GDPR rights: Art 15 right to access: you have a right to receive a copy of all personal data concerning you that are undergoing processing (including storage). Access may only be denied where this would “adversely affect the rights and freedoms of others.” Art 20 right to data portability: if processing is being carried out by automated means, and processing is based on certain legal bases (consent or contract, but not legitimate interest), then you have a right to receive a copy of your personal data in a machine-readable format, for personal data that you have provided to the data controller. Whereas the right to access is fairly straightforward, the right to data portability applies under much more narrow conditions. Basically, it's a right that you can download any data that you've uploaded so that you can move to a different service. Google Takeout is primarily concerned with your right to data portability, and provides your data in a machine-readable format. Any photos that you've uploaded to Google Photos, you'll be able to download. Thus, it could be technically compliant to exclude information that they've inferred about your personal data, such as image-recognition results. Such results would still be personal data under the GDPR definition of the consent, and would be covered by your right to access. Google might argue that you already have access to this data through the web interface. In my opinion the GDPR clearly requires the data controller to provide a “copy”, i.e. the data in some durable form – not merely access through a web interface. Whereas your question is specifically about Google, the same issue applies to other services as well. E.g. Ruben Verborgh has an interesting blog series on trying to get access to all their data from Facebook, though unsuccessful so far. Similar to your scenario, Facebook offers a download for personal data but does not include all personal data in this download. In one of the documents provided by Facebook in the course of the exchange, they note that they allow access to photo tags through the web interface, but do not include this in downloaded data – without providing further justification.
This would not be "legal jeopardy" per-se, really the only remedy that Stack Exchange would have in a case like this would be to ban both accounts. It would be different if you caused SE some kind of monetary/reputation damages to the site itself. From SE's Acceptable Use Policy: Identity Theft and Privacy. Users that misleadingly appropriate the identity of another person are not permitted. It seems your described scheme would violate that term. But this isn't a legal problem, just an operational one. You aren't violating any law (unless there are local laws against this) by paying somebody to "be you" on SE. The most that this would earn you and your cohort would be a ban and probably removal of the contributions.
The GDPR has an exemption for purely personal or household activity. Creating a family tree seems purely personal as long as you don't publish it. You're also allowed to freely share the tree as long as it stays within that purely personal scope. Your proposed restriction of only showing data of blood relatives seems excessively strict. But assuming that this exemption wouldn't apply, there'd probably still be no problem. The GDPR does not require you to always obtain consent. It requires that the purposes for which you process personal data are covered by some legal basis. Consent is one such legal basis, but legitimate interest is another. You can likely argue that you have a legitimate interest to create a tree of your (extended) family. The legitimate interest must be weighed against the rights and freedoms of the affected persons. For example, contact information could be used for stalking. The balance of the legitimate interest check can be changed if you adopt suitable safeguards. Your idea of only sharing data with close relatives would be such a safeguard, but it might not be necessary. When you rely on legitimate interest, the affected person can object to further processing, furthermore they can request to be erased from your records. A request for erasure can be denied if there are overriding grounds to keep the data. E.g maybe only contact information has to be deleted but names, dates, and relations might be kept. You should notify persons when they are included into your records. It is your obligation as the data controller to make these decisions. If someone disagrees they can sue you or lodge a complaint with a supervision authority. Note that dead persons are not natural persons in the sense of the GDPR, and have no privacy. However, national laws may provide such protections.
You must get opt-in affirmative consent to process personal data, including tracking people's use of your site or providing targeted advertising. The banner on StackExchange is likely in violation of the GDPR. Do not copy it. It does not have an explicit opt-in, only an opt out which is onerous (leave the site, then manually go in and delete any cookies they set, which may be hard to identify if they are from 3rd parties). The sites you mention that have a gateway are a more correct implementation. Consent must be acquired before processing of data begins, and it must be explicit.
Your data is not anonymous since from the picture of the face the individual can be identified. It would be anonymous, if the face was blurred and other possible identifiable information was removed. Of course, that would defeat your purpose. Please note that, in any case, Anonymization Techniques are, themselves, a type of personal data processing that requires a legal ground, and achieving real anonymization is not a trivial matter (see Article 29 Working Party's opinion 0829/14/EN WP216 on the subject). 1. The face of a person includes biometric information, which is defined in article 4 (14) among other types of personal information regulated by the GDPR as: "personal data resulting from specific technical processing relating to the physical, physio­logical or behavioural characteristics of a natural person, which allow or confirm the unique identification of that natural person, such as facial images or dactyloscopic data". A facial recognition software's purpose is exactly to perform a specific technical processing based on the facial features of the persons, to achieve a unique identification of a person based on these biometric features. Article 9 of the GDPR includes biometric data among the types of prohibited processing, unless one of the exceptions in § 2 applies. There are 10 types of exceptions among which: consent of the person, employment context, personal data made public by the person, scientific or historical research,... (each exception having its own conditions). You should check that you comply with one of these exceptions stated in article 9 § 2, if your application is about using facial images for unique identification of a person based on these biometric features. 2. In turn, if your processing is not about unique identification of a person based on these biometric features, but only about emotions recognition (which you briefly mentioned at the beginning of your post), it could be considered as not falling under the requirements of Article 9. That would still be a processing of personal information, but it would fall under the normal article 6 requirements.
Yes. Article 4 GDPR Definitions (1) ‘personal data’ means any information relating to an identified or identifiable natural person (‘data subject’); an identifiable natural person is one who can be identified, directly or indirectly, in particular by reference to an identifier such as a name, an identification number, location data, an online identifier or to one or more factors specific to the physical, physiological, genetic, mental, economic, cultural or social identity of that natural person; Recital 26 Not applicable to anonymous data The principles of data protection should apply to any information concerning an identified or identifiable natural person. Personal data which have undergone pseudonymisation, which could be attributed to a natural person by the use of additional information should be considered to be information on an identifiable natural person. To determine whether a natural person is identifiable, account should be taken of all the means reasonably likely to be used, such as singling out, either by the controller or by another person to identify the natural person directly or indirectly. To ascertain whether means are reasonably likely to be used to identify the natural person, account should be taken of all objective factors, such as the costs of and the amount of time required for identification, taking into consideration the available technology at the time of the processing and technological developments. The principles of data protection should therefore not apply to anonymous information, namely information which does not relate to an identified or identifiable natural person or to personal data rendered anonymous in such a manner that the data subject is not or no longer identifiable. This Regulation does not therefore concern the processing of such anonymous information, including for statistical or research purposes.