You are using a drone to map an area – this could be for an array of reasons such as:  missions related to construction planning, mining and geographical surveying to assist in mapping the path of a new road or the layout of a new housing estate. You are flying your drone 100m above houses and land, filming the buildings, the land and the immediate surrounding neighbourhoods. Citizens’ cars and items in their back garden are clearly visible, as are the persons walking to/from their houses, hanging out on the street or attending local services, places of worship and other facilities. After you are done filming, you download the recorded footage to your computer and share it with your company and third-party companies. 
Below you will see some of the main privacy and data protection issues that could arise in this situation and tips/ safeguards for how to avoid them. Keep in mind the detailed information provided in the Handbook.
Privacy and Data Protection
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        PRIVACY
Transparency, visibility and accountability: Individuals on 
 the ground may not know a drone is in operation. They should be aware who,
 when and how the drone is being used and for what purpose. This allows them to
 adjust their privacy expectations, be prepared and keep control over their
 privacy by acting accordingly.Chilling effect: Individuals who live in the immediate homes 
 and streets may be unsure about whether the drone is filming, what it can see
 and the purpose for which it is being used. This could lead individuals to
 adjust their behaviour as though they are under surveillance, even when they
 are not being monitored.Privacy of location and space: Persons living in the 
 neighbourhood have a right to move about freely in their own home (or garden,
 or car) without being identified, tracked or monitored. This right may be
 infringed as the individuals may feel they are being observed in their own
 homes or in their neighbourhoods.Privacy of thoughts and feelings: Individuals have a right 
 not to share their thoughts or feelings or to have them revealed. This
 includes their beliefs or religious views. This privacy may be infringed upon
 if the places of worship visible in your footage are being used, for example.
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        DATA PROTECTION
Remember that there are special requirements that apply whenever people 
 whose images you collected can be identified. Keep in mind that sometimes it
 may be possible to identify people also from the context – location, house
 numbers, car registration numbers, time of day, etc.Lawfulness, fairness, transparency: Your collection 
 and processing of personal data must be lawful, based on one of the options
 laid down by EU law. It must be fair, meaning that it must not cause any harm
 to the individuals. It must also be transparent – people have to know if their
 images have been captured, by whom and why. You must not do anything unlawful
 with the data.Purpose limitation: People have the right to know exactly 
 for what purpose their data is collected and, once you inform them of the
 reason (mapping), you cannot use their data for a different incompatible
 purpose (e.g. profiling of the neighbourhood for marketing purposes) without
 informing them again and ensuring your actions are lawful (see above).
 Data minimisation: You should collect as little 
 personal data as possible to achieve your goals – the mapping of the area.
 Only collect what is necessary, directly related to your purpose and/or
 unavoidable.Storage limitation: You should not keep the footage of 
 people in a manner that would allow their identification for longer than
 necessary for your planned purpose.Integrity and confidentiality: Where you have footage of 
 identifiable people, you should make sure that that data is stored in a secure
 and protected manner. Unauthorized access must be prevented.Accountability: Remember that if you collect personal data 
 and can choose what to do with it, you will be accountable if you don’t follow
 any of these principles.
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        SAFEGUARDS
TIPS - If you think someone has a reasonable expectation 
 of privacy, don’t violate that privacy by taking pictures, video, or
 otherwise gathering personal data, especially by targeting a specific
 person.TIPS - Engage in a public information campaign. Consider 
 the use of advertisements, signs, leaflets and social media announcements
 that provide information about what the drone is doing, when it will be
 operating, what it may record, and what the footage will be used for. Don’t
 forget to include your contact information as well, so individuals could
 turn to you if they have any questions or requests. If someone does not wish
 to be filmed, you should comply with their wish.TIPS – Only collect and store data relevant for mapping. 
 Collect the minimum amount of data necessary in relation to your legitimate
 course. Consider flying at a lower altitude above the space you wish to map
 to ensure less background data is collected. This also ensures that
 individuals are more aware of the drone and promotes transparency.TIPS - Individuals recorded should have a right to 
 access the material where they can be identified and should be enabled to
 request the data controller to delete that material. You should inform them
 of that right.TIPS - Do not share data on identifiable persons with 
 third parties without the agreement of the people in the images or without a
 legal obligation requiring you to do so.TIPS – Consider taking anonymising steps whenever and as 
 soon as possible, such as blurring, to minimise the amount of personal data
 collected. E.g., blur the images of people inadvertently caught on the
 footage, as well as all house numbers and car registration and plate
 numbers.TIPS - Store any personal data collected in a secure 
 manner, and ensure that it is not stored longer than necessary for your
 planned purpose.TIPS – Be aware who the data controller and the data 
 processor is in this case, especially if you are carrying out this activity
 together with another company. Remember that data controllers and data
 processors are subject to various legal obligations in the EU.