For what lengths of time will personal data be used and kept?
NOS uses and keeps your personal data according to the purposes for which they are used.
There are situations in which the law obliges data to be used and kept for a minimum period of time, namely:for one year, localisation and traffic data for investigations, detection and supression of serious crimes, or 10 years for data necessary in relation to information for the tax authorities for fiscal or accounting purposes.
But, in situations where no specific legal obligation exists, the data will used only for the period necessary to achieve the purposes that were the reason for their collection and preservation and, at all times in compliance with the law, and the guidelines and decisions of the CNPD.
Thus, NOS will process and maintain your personal data for the period during which a contractual relationship is maintained with you.
However, data traffic that are needed for invoicing, for example, destination and origin numbers of calls made, date and time of communication, duration of call, IP address and mac address, will only be kept for a maximum period of 6 months starting from the date on which the data were generated.
In relation to calls recorded, and according to the terms of the standard authorization, NOS will keep the recordings in order to provide proof of commercial transactions and communications as part of the contractual relationship for the time that the contract agreed between the parties is in force, plus the prescription and limitation period of 6 months.
NOS can also record and keep calls with the goal of monitoring service quality and based on customer agreement, but for this purpose the calls will only be kept for a maximum period of 30 days.
In relation to video surveillance in its premises and stores, NOS will only keep recordings of images and related personal data for a maximum period of 30 days.
NOS will keep other personal data for periods in excess of the duration of the contractual relationship, either based on your agreement, or to ensure rights or obligations related to the contract, or because it has legitimate interests that support so doing, but always for the period of time that is strictly necessary to achieve the respective purposes and in accordance with the guidelines and decisions of the CNPD.
Examples are: contact for purposes of marketing and sales, the preservation of data as part of invoice complaint processes, exercising guarantee rights, taking away equipment after disconnecting the customer or legal proceedings, during the time in which these are pending.