How ChatGPT’s New Locked Chats Work: Keeping Sensitive Conversations Out of Your Regular Memory
Many people now use ChatGPT for things they would never post publicly: a health worry, a money problem, a difficult email to a family member. Until now, all of that sat in the same chat list as your recipe ideas, and a good part of it could end up in ChatGPT’s memory, the feature that remembers details about you across conversations.
On October 20, 2026, OpenAI began rolling out a feature meant to change that: Locked Chats. The headline version going around says it stops sensitive conversations from being saved to memory. The real picture is a little different, and the differences matter if you plan to rely on it. This guide explains what the feature does, how to turn it on, what happens to memory, and where its protection ends.
A note on sources. The first-hand source is OpenAI’s own ChatGPT release notes. That entry is short and does not cover memory. The memory details below come from news sites that reported on the launch, and where those reports disagree with each other or with OpenAI, I say so.
What Locked Chats Are
According to OpenAI’s release notes entry dated October 20, 2026, selected conversations stay in your account but are removed from your regular chat history, your pinned chats, and search. You open them with a 4-digit account PIN or supported device authentication.
In plain terms: a locked chat is still saved, but it moves to a separate section that someone browsing your account cannot open without the PIN or your fingerprint or face. The main use case is a shared or borrowed device, or a phone that a family member sometimes picks up.
How to Lock a Chat
OpenAI’s release notes give a short instruction: open the chat’s more options menu (the three dots) and choose Lock chat. The first time, you will be asked to set up your PIN. On mobile, supported devices can also use Face ID, Touch ID, or your device unlock instead of typing the PIN.
Two practical tips:
- Update the app first. OpenAI says the rollout is gradual, so if you do not see the option, update the app or check again in a few days.
- Lock before you share. Lock a chat before you hand someone your phone or laptop, not after.
What Happens to Memory
This is the part people care about most, and it is also where the sources are least clear.
OpenAI’s release notes entry does not describe memory behavior. Two news reports do:
- A report on Tech Edition says new messages sent in locked chats do not update the memory used in regular chats.
- The Hans India reports that, if Memory is on, information from locked chats goes into a separate memory space that only other locked chats can access. It adds that anything ChatGPT already remembered before you locked a chat stays in your regular memory.
Voice of Emirates also says locked-chat information is kept separate from regular memory and is not added to your general memory.
Put together, the most consistent reading is this: locked chats do not feed your normal memory, but they may have a memory of their own. So the feature does not switch memory off. It builds a wall between two memory spaces. If your goal is “ChatGPT must never remember this at all,” a locked chat is probably not the right tool, and a Temporary Chat or turning memory off is closer to what you want. I could not confirm the exact behavior from an OpenAI page, so test it yourself with a harmless example before trusting it with something sensitive.
The Most Important Warning: Resetting the PIN Deletes Locked Chats
Two reports describe a serious consequence. The Hans India says that if you forget your PIN and reset it, the locked chats, hidden files, and private memories tied to the old PIN are permanently deleted, and OpenAI cannot restore them. Voice of Emirates describes the same deletion but ties it to resetting a forgotten password.
The sources differ on the trigger, a PIN reset or a password reset, so assume both are risky. The practical lesson is simple:
- Do not lock the only copy of something you cannot lose. If a chat holds information you need, export or copy it somewhere safe first.
- Store your PIN in a password manager, not in your head alone.
What Locked Chats Do Not Do
Every report stresses the limits, and this is the section to read before you decide how much to trust the feature.
It is not end-to-end encryption. Voice of Emirates and The Hans India both say locking does not create a separately encrypted storage area. The chat is hidden from the interface, but it is still stored in your account.
It does not change retention or training settings. OpenAI’s release notes say your retention and model-improvement settings are unchanged. If your account allows your chats to be used to improve models, a locked chat is treated like any other chat in that respect. If you want to change that, look at your data controls separately.
It is not a Temporary Chat. Temporary Chats are a different option for conversations you do not want in your normal history. Locking and temporary chatting solve different problems.
Some chats cannot be locked. The Hans India lists Temporary Chats, archived chats, group conversations, and chats created through links as not lockable. That is one outlet’s report, so confirm it in the app.
It does not protect you from account takeover. Tech Edition describes the feature mainly as an access-control tool, not a complete privacy guarantee. If someone gets into your account and knows your PIN, or if your device is unlocked and unattended in the wrong moment, the protection is limited.
Who Can Use It
OpenAI’s release notes say the feature is rolling out gradually to Free, Go, Plus, and Pro users, on the web, the iOS and Android apps, and the new ChatGPT desktop app for macOS and Windows.
Some news reports extend the list to Business, Enterprise, and Education plans. I could not confirm that from OpenAI’s page, so if you manage a workplace account, check with your administrator before relying on it.
Locked Chats vs. Other Privacy Options
| Option | What it does | Keeps chat from memory? | Still stored? |
|---|---|---|---|
| Locked Chat | Hides the chat behind a PIN or device unlock | Not your regular memory (reports differ on a separate one) | Yes |
| Temporary Chat | Keeps the conversation out of normal history | Designed for chats you do not want kept in the usual way | Check OpenAI’s current policy |
| Turning Memory off | Stops ChatGPT remembering details across chats | Yes, for new chats | Chat history may still be saved |
| Deleting a chat | Removes it from your history | Check OpenAI’s policy on remembered details | Subject to retention rules |
The right choice depends on your worry. If the worry is someone seeing your screen, use Locked Chats. If the worry is ChatGPT remembering you, use Temporary Chat or switch Memory off. If the worry is how OpenAI stores or trains on your data, change your data controls, because locking does not touch them.
Who Benefits Most From Locked Chats
The feature is not for everyone, but it fits a few situations well:
- People who share a device. A family tablet, a shared work laptop, or a phone that children pick up all make hidden chats worth having.
- People who use ChatGPT for personal planning. Budget worries, career decisions, and relationship questions are the kind of topics many users would prefer not to see in a sidebar.
- People who present or screen-share often. Chat titles can appear in a sidebar during a meeting. Moving a personal chat out of the regular list lowers the chance of an awkward moment.
- Anyone who wants less clutter in memory. If you do not want a one-off topic shaping future answers, keeping it away from your regular memory is a convenient habit, with the caveat above about a possible separate locked memory.
It is less useful if your main concern is how a company stores your data. In that case, read the data controls in your settings and decide what you are comfortable sharing in the first place.
A Practical Privacy Routine
Here is a routine that combines the options sensibly:
- Decide what the chat is about before you start. If it is sensitive, start it as a Temporary Chat or lock it right away.
- Keep names and numbers out. Describe the situation without account numbers, full names, or addresses. Locked or not, you do not need to give an AI service more than the task requires.
- Lock chats on shared devices. If anyone else touches your phone or computer, lock anything personal.
- Review your memory settings. Open the memory page in settings and delete anything you do not want remembered.
- Protect your account. Use a strong, unique password and two-factor authentication, because the PIN only guards a chat inside a session you are already signed in to.
- Back up what you need. Copy out anything you cannot afford to lose before you rely on a PIN you might forget.
For other privacy habits when you upload documents to AI tools, see our checklist in Free AI Tools for Translating and Summarizing Documents.
Common Mistakes to Avoid
Assuming locked means private from OpenAI. The feature hides chats from people using your device. It does not change what OpenAI stores.
Assuming locked means forgotten. Reports say locked chats can have their own memory. If you need nothing remembered, use a different option.
Locking after the fact and expecting old memories to vanish. The Hans India reports that anything remembered before you locked a chat stays in regular memory.
Forgetting the PIN. A reset can permanently delete your locked chats.
Treating it as security for illegal or dangerous material. Locking does not make any content exempt from the service’s rules.
Skipping the app update. If the lock option is missing, you may simply be on an older version, or in a later wave of the rollout.
Frequently Asked Questions
Does Locked Chats stop ChatGPT from saving my sensitive conversations to memory? Not entirely. Reports say locked chats do not update your regular memory, but they may keep a separate memory space for locked chats only. OpenAI’s release notes do not describe memory behavior.
Can OpenAI still see my locked chats? The feature is not end-to-end encryption, and it does not change retention or training settings, so you should assume the chats are stored like others.
What happens if I forget my PIN? Reports say a reset permanently deletes locked chats, hidden files, and related private memories, and that support cannot restore them.
Is Locked Chats the same as Temporary Chat? No. Temporary Chats are a separate option for conversations you do not want in your normal history.
Is it free? OpenAI says it is rolling out to Free, Go, Plus, and Pro users.
I do not see the option. Why? The rollout is gradual. Update the app and check again.
The Bottom Line
Locked Chats is a useful, simple privacy tool: it keeps sensitive conversations out of sight on a device other people can reach, and reportedly out of your everyday memory. It is not encryption, it does not change how OpenAI keeps or trains on your data, and a reset of your PIN or password can wipe the chats for good. Use it for what it is good at, pair it with Temporary Chats or memory controls when you want ChatGPT to forget, and keep anything irreplaceable somewhere else. If you use ChatGPT heavily, you may also like our look at ChatGPT Pro’s parallel agents.
