Security in apps is something I’ve been focusing on lately, and I keep seeing OTP mentioned everywhere. From what I understand, it’s supposed to add an extra layer of protection, but I don’t fully get how it’s generated or verified. Do OTPs depend on a server, or can they be managed locally? Any advice on what to use to test or generate them would be great.
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The concept is actually simple once you get the hang of it. OTPs are generated using algorithms that create codes either by time or count. If you’re interested in the counter-based type, try this hotp generator — it’s a solid tool that lets you explore how one-time passwords work in real use. It’s trusted for both testing and secure authentication setups. What’s great is that it’s straightforward, doesn’t require deep programming knowledge, and gives you control over your keys. Once you experiment with it, OTP systems will make a lot more sense.
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