privacy Privacy-preserving techniques 4 Differential privacies 3 Federated learning 3 Ho-momorphic encryptions 3 Privacy 3 adult 3 article 3 human 3 Activity monitoring 2 Data Sharing 2 Driver activity monitoring 2 Homomorphic-encryptions 2 Humans 2 Information Dissemination 2 Learning frameworks 2 Open-source 2 Open-source federated learning framework 2 Secure multi-party computation 2 Smartphones 2 anonymization 2 controlled study 2 data privacy 2 differential privacy 2 driver activity monitoring 2 federated learning 2 female 2 homomorphic encryption 2 information dissemination 2 male 2