# Multidimensional Study on Users' Evaluation of the KRAKEN Personal Data Sharing Platform
## 3 Results
### Acceptance, Ethics  
Participants to the health pilot were asked \"What is your impression of the level of data protection and privacy of the KRAKEN platform?\" Five participants replied that it was not clear from their interaction with the prototype how KRAKEN was ensuring data protection and privacy of data products. Two participants said they knew how blockchain technologies contribute to data protection and privacy, so they would trust KRAKEN just by knowing it is based on this type of technology. Two participants admitted that users typically read very superficially the conditions of use of a new system and then click accept, but in the case of KRAKEN it would be useful to be reminded about fundamental aspects of privacy and ethics at the specific moment when the user takes decisions about creating and publishing a data product. Three participants did not have a clear impression on how KRAKEN was dealing with privacy and data protection issues and asked to have more information on that. We asked participants \"Can you think of any data protection or privacy risks that you could encounter using the KRAKEN platform?\" In response, eight participants agreed that there is no software system or platform that can be considered completely secure, but they thought that the role of KRAKEN was to minimize the risk as far as possible, since the type of data shared are particularly sensitive. Among the risks identified by participants were misuse of data, data leakage, hackers' attacks, risk of deleting data by mistake, unclear specification about who to contact in case of problems (e.g., local vs European authorities). One participant said it would be important to provide more information on data protection and privacy when registering an account in the marketplace, another participant mentioned that quantum computing may represent a future threat for blockchain-based platforms such as KRAKEN. Two participants had nothing to add to this question. In addition, participants were asked \"Is the provided information relating to your data protection and privacy rights and freedoms sufficiently clear and understandable?\" Three participants replied that they appreciated the fact that KRAKEN considered this issue, and the quality of information provided is sufficient for the status of the prototype released. Six participants asked for having clearer information on this topic and proposed to use icons to present information on privacy and GDPR compliance, to provide more information on privacy by design measured adopted, more contextual information on privacy and data protection when performing key actions in the platform for publishing data products. Three participants had no clear answer to this question or had a neutral position regarding this issue.  
Participants to the education pilot were asked \"Will your acceptance for the KRAKEN data sharing services differ if it was provided by a company like Google? A recruiting company? Or an IT company like IBM?\" All three participants replied they would not share their data with Google or IBM since they store data in the U.S. out of Europe, and in the case of recruiting companies, they would prefer to decide each time with whom to share or not share their data. We asked participants \"Do you see any ethics concerns in using a data sharing platform like KRAKEN?\" In response, one participant said it is important that KRAKEN supports data sharing in a secure way, by ensuring that data is not sold or used differently from what stated by the data provider. One participant was concerned about possible changes in regulation and discontinuity of the platform once the KRAKEN project is over. One participant mentioned they would prefer to start using KRAKEN by providing noncritical data, and, then, after some months of usage, if everything works fine, they might be willing to share more sensitive personal data (e.g., health data) through it.