Identity & SSO Systems

If your team signs in to every system with a separate username and password, if passwords are circulating in notebooks and WhatsApp messages, and if revoking all of a departing employee's access takes days, the problem is not your users — it is your identity infrastructure. I build a sign-in system in which all of your applications pass through a single secure gate. My own authentication platform, ssoea.com, is the live example of this: the ealtuner.com admin panel, İlaç Takip, Echosfer, Lifera and YouDesignFuture are all entered through the same gate.

What I do

• Single sign-on (SSO): The user signs in once and moves through every application they are authorised for without entering a password again.
• Passwordless sign-in: A one-time code sent by email. No password is left to be forgotten, stolen or shared. Where needed, a password plus two-step verification can be set up as well.
• Current security standards: Passwords stored in an irreversible form (Argon2id), all traffic encrypted (TLS 1.3), and an on-screen keyboard as protection against keylogging malware.
• Attack and bot protection: Rate limiting against automated password-guessing attempts, and blocking of suspicious sign-in attempts.
• Session management: Who signed in, when and from which device is visible; sessions can be ended remotely, and a departing employee's access is closed from a single screen.
• Connecting existing systems: The panels and applications you already use are connected to this single sign-in point over common standards (OAuth2).

How we proceed

1. Discovery: We work out together which systems exist, who accesses which of them, and which roles and permission levels are needed.
2. Design and development: I set up the sign-in flow (passwordless or with two-step verification), the role structure and the login screen, then connect the applications one by one.
3. Testing and delivery: We trial it with real users and test critical scenarios such as a lost device or an employee leaving; I carry out the transition in stages.
4. Support: Monitoring after go-live, connecting new applications as they are added, and security updates.

Is this service right for you?

If you run more than one application or panel, if your team is growing, or if you hold customer data, it is the right choice. If you have a single small site and a handful of users, I would not recommend it; a far simpler sign-in solution will do the job, and I will tell you so plainly. Where signing in with a Google or Microsoft account is enough, I recommend ready-made services too; building your own identity system becomes worthwhile when the data and the entire sign-in flow need to remain fully in your hands.