AI agents for business finance: what they can and can't do
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The short answer
Give your child their own profile on Android, or lock banking apps with Face ID on iPhone, and make your bank app passcode different from your phone passcode. The usual weak point is the transaction PIN: children learn it by watching or find it saved on the phone, so delete any written copy and change it if in doubt.
The real risk is not hacking, it is easy access
Most parents who hand a phone to a child for cartoons or games are not worried that the child will hack anything. The risk is simpler: a child taps through screens quickly, has watched you type your PIN many times, and sometimes knows it better than you think. Stories of children buying game credits, sending money to a "friend" in a game, or simply transferring by mistake are common enough that most parents have heard one. The fix is not to watch more closely. It is to set the phone up so that the banking apps are behind a barrier the child cannot pass, even if they know your phone passcode.
Layer 1: keep the child out of your space on the phone
On Android: a separate profile or pinning
Many Android phones let you create a second user or guest profile. A child using their own profile sees only the apps installed there, with no access to your banking apps, messages or saved passwords. Look in Settings under Users or Multiple users; the name varies by manufacturer. Some phones also offer a hidden or private space for sensitive apps. If profiles are not available, app pinning (often under Security settings) keeps the phone fixed on one app, such as a video app, until your screen lock is entered.
On iPhone: lock or hide individual apps
iPhones support locking individual apps so they need Face ID or Touch ID to open. Apple’s Stolen Device Protection page lists "opening a locked app" among the actions that require biometrics with no passcode fallback away from familiar places. Long-press a banking app icon and look for the option to require Face ID. Apple also offers Screen Time controls and Guided Access, which keeps the phone on a single app.
For Android-wide settings that protect banking apps, see Android settings for banking apps; for iPhone, iPhone settings to turn on.
Layer 2: make the banking app itself hard to open
- Use an app passcode different from your phone passcode. If your child knows how to open the phone, they should not automatically be able to open the bank app.
- Do not enrol your child’s fingerprint or face. Every enrolled print opens every app that uses biometric login. It is tempting to add a child’s thumb so they can open the phone themselves; give them their own profile instead.
- Hide the balance. Some apps offer a mode that hides balances on screen. Kuda’s help centre, for example, describes a Private Mode with Hide Balance.
- Turn off "stay signed in" or shorten the time before the app locks itself, where the app offers it.
Layer 3: the PIN is the weak point
All the profiles and locks in the world fail if the child knows your transaction PIN. And children learn PINs the same way adults do: by watching.
| How PINs leak to children | Fix |
|---|---|
| They watch you type it, many times | Cover the keypad, or move a step away when paying |
| It is written in Notes, in Contacts as a fake number, or in a photo | Delete it from the phone completely |
| It is a birthday, often the child’s own | Choose digits with no family meaning |
| The same PIN is your card PIN, app PIN and phone passcode | Use different PINs; see using the same PIN everywhere |
| You have said it aloud to an older child to "pay for you" | Change it afterwards |
If you are unsure whether your child knows your PIN, assume they do and change it. It takes a minute in the app.
Layer 4: limit the damage if something slips through
- Lower your daily transfer limit so a mistake or a determined teenager cannot move much. See setting a low limit on purpose.
- Remove saved cards from game stores and app stores, or require your password for every purchase.
- Keep alerts on so you see any debit as it happens.
Steps for this weekend
- Create a child profile (Android) or set app locks and Screen Time (iPhone).
- Delete any fingerprints or faces that are not yours.
- Change your bank app passcode so it differs from the phone passcode.
- Change your transaction PIN if it is a birthday or has ever been said aloud at home.
- Delete any PIN written anywhere on the phone.
- Remove saved cards from game and app stores.
A word for older children
Teenagers often need to make payments themselves. Rather than sharing your PIN, consider giving them their own account or a separate pot with a small amount you top up, so they learn to manage money without access to yours.
Where Pryme fits
In a Pryme account, a separate Naira Savings Box can hold money you do not want within easy reach, and transfers need your transaction PIN. The security page explains the controls.
Questions people ask
How do I lock my bank app from my child?
Use a bank app passcode different from your phone passcode, lock the app with Face ID on iPhone, or give your child a separate profile on Android so your apps are not visible.
My child sent money from my bank app, can I get it back?
Call your bank immediately and ask it to contact the receiving bank. Recovery depends on whether the recipient still holds the money and cooperates.
Should I add my child’s fingerprint to my phone?
No. Every enrolled fingerprint can open apps that use biometric login, including banking apps. Give the child their own profile instead.
How do I hide my banking app on Android?
Many Android phones offer a second user profile, a private or hidden space, or app pinning. Look in Settings under Users, Security or Privacy; the names vary by manufacturer.
Sources
- Apple Support: About Stolen Device Protection for iPhone · accessed Oct 2026
- Kuda Help: Safety Mode · accessed Oct 2026
This article is general information, not financial, legal or tax advice. Products described are provided under the terms on this site and are subject to regulation and eligibility.