Is Stickerbox safe for kids? Privacy and paper

How Stickerbox filters prompts, what Hapiko's privacy policy says about voice recordings, COPPA and the UK Children's Code, and BPA in thermal paper.

Updated 2026-10-14

For most families Stickerbox looks reasonably safe to use, with some caveats. It has no camera, only listens while the button is held down, and blocks violent, sexual and rude prompts. Hapiko says its paper is free of BPA and BPS. The main things to know are that its privacy promises are less simple than its marketing suggests (transcripts of what your child said and the pictures made are kept until you delete them), that its filters have not been publicly audited, and that it is built for US rules, not UK ones.

This is general information, not legal or medical advice. For a data complaint in the UK, contact the Information Commissioner's Office (ICO); in the US, the Federal Trade Commission (FTC).

How the AI filtering works

Stickerbox turns speech into text, sends it over Wi-Fi to AI image models, and prints the result. Filtering happens before anything is drawn. Hapiko's FAQ says every prompt passes through several safety layers, and its safety page says adult or unsuitable words are blocked before an image is made, and that images that do get made use child-friendly styles with their own content filters. If a prompt is refused, nothing prints and the child is asked to try another idea.

What independent reviewers found:

These were informal tests by journalists, not a formal audit. Two practical limits matter more day to day. First, nothing previews before printing (Tom's Guide pointed this out), so if the AI produces something odd your child sees it on paper. Second, the AI can mishear: Tom's Guide and The Everymom both reported prompts from young children being misunderstood.

Allowing famous names also means children can make stickers of real people, which some parents may want to talk through.

What happens to your child's voice

What Hapiko's marketing says

• The box only listens while the white button is pressed and does not run in the background (FAQ, safety page).
• Recordings are held briefly while a sticker is made, then deleted automatically, and are not shared or used to train AI (FAQ).
• The safety page goes further and says Stickerbox does not store data, sell it or use it for ads.
• There is no camera, and Hapiko's launch materials mention no continuous data collection (Pulse 2.0).

What the privacy policy says

We read Hapiko's privacy policy directly (effective 17 April 2026). On children's data it sets out a retention table:

So the voice recording itself is short-lived, but a text record of every prompt and every picture is kept on Hapiko's side by default. That sits awkwardly with the safety page's claim that Stickerbox does not store data. Parents can view and delete transcripts and images in the app, delete the whole account in settings, or email help@stickerbox.com.

Other points in the policy worth knowing:

• It does not name the AI companies that process prompts, so you cannot check their terms.
• It names Google Analytics and Stripe (payments) as third parties, and says it may share data with advertising partners for interest-based ads. Separately, it says device identifiers collected under COPPA's internal-operations exception are not used for targeted advertising or to contact children.
• It cites US laws only (COPPA, California and Nevada) and does not mention UK GDPR or international data transfers.

COPPA: the US rules

The Children's Online Privacy Protection Rule (COPPA), enforced by the FTC, protects children under 13. The FTC's guidance says it covers internet-connected toys and that a recording of a child's voice counts as personal information, which normally needs verifiable parental consent.

There is a narrow exception. Since 2017 the FTC has said it will not take action when an audio file is collected only as a replacement for typed words, such as a voice search or command, is kept only for the brief time needed, is not used for anything else, and the practice is described in the privacy policy. It does not cover cases where the child is asked to say personal details such as their name.

Stickerbox's design (speech turned into a prompt, audio then deleted) appears built around that exception, and its policy describes the deletion. Hapiko's policy says it does not knowingly collect personal information from under-13s without verifiable parental consent, beyond what is needed to get that consent. TechRadar and Yanko Design both report that Stickerbox is kidSAFE COPPA-certified, a third-party programme, and the official site references kidSAFE. We could not open the kidSAFE listing to confirm the details. Certification is a useful signal but not the same as an FTC ruling.

The UK Children's Code

In the UK, the ICO's Age Appropriate Design Code (the Children's Code) has a standard on connected toys and devices. Among other things it says such toys should:

• make clear on packaging and online, before purchase, that the product is connected and processes personal data;
• show clearly when the device is recording or listening, for example with a light;
• not collect personal data while in a listening mode;
• offer an easy way to turn off data collection.

Stickerbox's push-to-talk design fits the spirit of the listening rules. But Hapiko does not sell in the UK and its policy says nothing about UK law, so UK families importing one should not assume the protections they would get from a UK-sold connected toy. If you have a concern about how a company handles your child's data in the UK, the ICO is the regulator.

Is the thermal paper safe?

Thermal paper uses a heat-sensitive coating. Many receipts historically used bisphenol A (BPA) in that coating.

• EU and Great Britain. EU Regulation 2016/2235 bans placing thermal paper on the market with 0.02% or more BPA by weight, from 2 January 2020. The Health and Safety Executive says the same restriction applies in Great Britain.
• BPS, the common replacement. The European Chemicals Agency (ECHA) reported in 2020 that bisphenol S (BPS) had largely replaced BPA in EU thermal paper and said BPS is suspected of affecting human reproductive and hormonal systems. It warned that swapping one suspect chemical for another was not the aim.

Hapiko says Stickerbox paper is free of both BPA and BPS. That is the right answer on paper, but it is the company's own claim and we did not find published test results. We did not find a US federal rule on bisphenols in thermal paper to cite here. Simple habits help regardless: wash hands after a long sticker session and do not let young children chew the paper.

The printer itself has no ink cartridges, and Hapiko's FAQ says it only runs on its mains adapter, so there are no button batteries in the box.

A parent's checklist

1. Set the device up yourself and review the app's privacy settings.
2. Check the creation history in the app now and then, and delete what you do not want kept.
3. Agree house rules on what to ask for, including real people.
4. Keep it in a shared room; it needs a socket anyway.
5. Use only Stickerbox paper, which is also what the warranty requires.
6. If you are in the UK, read the where to buy guide on importing first.

More on Stickerbox

• Stickerbox overview
• Stickerbox alternatives