Tikkertje privacy notice
Updated 11 November 2026
We are still checking data retention, backups, technical providers and the legal basis for each purpose. We do not list fixed deletion periods or legal details that we have not confirmed. Contact us if you need to know how this applies to your data.
Who runs Tikkertje?
Tikkertje is run by Nefkon. For privacy questions, email [email protected]. For help, email [email protected]. We do not list a postal address or registration number because those details have not been confirmed.
What data do we use?
Depending on how you use the service, we use organiser and game-pass buyer details, such as account and purchase data, plus player names, game codes, game settings, scores, roles and game results. During a game, the app uses precise GPS location to run the game. Players also send photos and videos as evidence. If you email us or use the contact form, we receive your email address and message.
Players without an account
A player joins as a guest with the organiser’s invite code and a chosen player name. Players do not need an account or email address. Tikkertje creates a player ID and gives the phone a private access token for that game. The iPhone app saves this session in Keychain. The player record stores a one-way hash of the token. To replay a join request made with the same idempotency key, the server also stores an encrypted successful response that contains the token. The effective retention period for this encrypted copy in the live service is still being checked. These details link the player to the game, score, location and submitted evidence.
Location and background access
During an active game, Tikkertje asks for iOS location access, including the “Always” option. If you allow only “While Using the App”, the app reports your location only while it is open. With “Always” permission, the app can keep reporting location in the background during an active game. Reporting stops when the game ends. The app sends only recent usable fixes: no more than 30 seconds old and no more than 25 metres of measurement error; the server also checks each fix against its configured limits. The server stores only each player’s latest accepted position, not a full location route. An older fix cannot replace a newer one. Only the current tagger can view other players’ positions during an active game. The position service does not return positions after the game. A daily cleanup job exists for post-game positions, but its active retention setting and operation are still being checked.
Camera, microphone and submitted evidence
The camera is needed to send photo and video missions. The microphone records sound with video. The player who sent evidence and the buyer of that game pass can view the processed evidence. Other players, including the tagger, cannot access those photos and videos unless that player is also the buyer. A secure download link is given only to a player or buyer who has access. You can deny camera and microphone access, but you cannot send those missions without it.
The app is free; the game pass is separate
The Tikkertje app is free to download. An organiser can buy a game pass separately on this website. Stripe handles the payment. For a purchase, the website may use details such as the selected pass, number of players, city, language and payment status. The app does not ask you to buy anything in the app.
Contact form and security
If you use the contact form, we send your email address and message to [email protected]. Cloudflare Turnstile checks whether a person is likely using the form. The check does not send your message text to Cloudflare, but may use technical details about your browser and connection.
Services that help us
We use Stripe for payments. Cloudflare provides the contact form security check. Email is sent through Hetzner. The Tikkertje app uses a server and storage for game data and submitted evidence. We are still checking the active storage regions, backup settings and any extra analytics or crash services. We will update this information once confirmed.
How long do we keep data?
We keep data only as long as needed for the game, support, payments and legal duties. Active retention periods for game history, accounts, support email, server logs and backups are still being checked. Photos, videos and location data may be removed after use, but we do not promise a fixed period until the active settings and deletion job are confirmed.
Your choices and privacy rights
You can manage location, camera and microphone access in your phone settings. You can ask Nefkon to access, correct or delete your personal data, or object to or restrict its use, where the law gives you that right. Email your request to [email protected]. We may ask you to confirm your identity. You can also complain to the Dutch Data Protection Authority (Autoriteit Persoonsgegevens).
Changes and questions
We update this notice when Tikkertje or its data use changes. The date at the top shows when the text was last updated. For a question or request, email [email protected]. For help with the game, email [email protected].