One ID for everything you do. Free, and yours.
Your Intersink User ID is how you sign in, whether you own a business or work in one. One account per person, strong security, and a way into every business you belong to, without a new login for each one. It costs nothing and it stays yours when you change jobs.
An account for owners and their teams
Your User ID is not a set of personal tools. It is how you sign in, how businesses find you, and how you move between them.
Secure sign-in
Passkeys, 2-step verification, new-device checks and sign-in alerts, set once and used for every business you belong to.
Invitations
Businesses that have asked you to join, with the role on offer. Accept or decline in one place.
Your businesses
Every business you own or belong to, with your role in each. Start a new one under the same User ID whenever you are ready.
Switching
Move between businesses and their channels from the header, without signing in again.
Activity
Every action on your User ID for the last 90 days: sign-ins, changes you made and decisions we sent you. You can download it.
Account status and notices
A plain view of whether anything on your account is limited, and every decision we have taken about it, with the reason and your options.
Each business sees you only as you are there. Not your other businesses, your security settings or your activity elsewhere.
That includes owners and admins of any business you join.
Ways to sign in, from strongest
Your security centre shows a checkup of every way into your account, and how to close the gaps. Doing all of it takes a few minutes.
| Method | What it is | Why it matters | Our view |
|---|---|---|---|
| Passkey | Your fingerprint, face or screen lock | Only works on our own site, so it cannot be phished | The safest way to sign in |
| Authenticator app | A six-digit code from an app on your phone | Works with the common authenticator apps | A strong second step |
| Text message code | A code sent to your verified phone | Can be intercepted; businesses can switch it off | Better than nothing |
| Recovery codes | Ten single-use codes you keep offline | For the day you lose your phone | Print them or keep them in a password manager |
What we do when something looks wrong
- New-device confirmation
Sign in from a device we do not recognise and we ask you to confirm it is you before letting it in.
- Sign-in alerts
Alerts for new devices and repeated wrong passwords, with a one-tap “this wasn’t me”. Critical alerts cannot be turned off.
- Devices and sessions
See every device signed in to your User ID and sign any of them out, or all of them at once.
- Security activity
Sign-ins, failed and blocked attempts, and every change to how you sign in, kept for 180 days.
- Recovery email
A second address used only if you lose access to your main one. We never send marketing there.
- Slowing down attackers
Too many attempts from one device or network and sign-in pauses for a few minutes.
Join by invitation. Leave with everything that is yours.
Businesses on the platform invite you by email. You join with your own User ID, so you never share a password with an employer.
- 1
An invitation arrives
A business invites you by email. It appears under Invitations, with who sent it, the role they are offering and when it expires.
- You see
- The business and the sender
- The role and what it allows
- 2
You decide
Read what the role lets you do and what the business will see about you, then accept or decline. Declining is fine; nobody is signed up without saying yes.
- Your choice
- Accept
- Decline
- 3
You work under your own name
The business appears in your workspace. Your edits there are recorded in their activity log under your name, which protects you as much as them.
- Always
- Your own password or passkey
- Your own 2-step
- 4
You move on, and keep your ID
When you leave, the business removes your access. Your User ID, your security settings and your other businesses stay exactly where they were.
- Stays with you
- User ID and security
- Your other businesses
Before you accept, you know exactly what is shared
Every invitation lists what the business will see about you and what it never will. Nothing on the second list changes when you accept.
- Your name and picture
Shown to everyone in that business.
- Your sign-in email
Used to contact you about their workspace.
- Your role in their business
Shown to the people who manage their team.
- What you do in their workspace
Their activity log records edits you make there.
- Your other businesses and channels
Never shared.
- Your security settings
Never shared.
- Your activity elsewhere
Never shared.
Pages you opened keep working offline
Plenty of people use Intersink on a shop floor, in a clinic corridor or on a train. If the connection drops, pages you have already opened stay readable.
Avatars are drawn on your device rather than downloaded, so pages stay light on slow connections too.
About your User ID
Is a User ID really free?
What happens to my User ID if I leave my job?
Can my employer see my other businesses?
Do I need a separate login for each business?
Do I need a passkey?
Can I start my own business later?
Get your User ID
Free, protected by passkeys, and one sign-in for every business you own or work in.