How do you implement passwordless email links?
PICTURE THIS: A SENTENCE BECOMES TOKENS
The model does not read letters like humans. It reads these pieces, then predicts the next one.
Simple meaning
Send a short-lived protected token link that signs the user in.
WHY — Identity instead of guessing?
Why interviewers care about Identity:
question about Identity.
trade-offs, and what you would actually do on a .NET MVC project - not buzzwords.
Name the idea, why it exists, then one short example.
End with when you use it and one common pitfall.
STEPS — What happens with tokens?
Before the model can read a sentence, it goes through these steps:
- 1Send a short-lived protected
token link that signs the user in.
- 2Token IDs
Rate limit requests.
- 3Embeddings
Tokens are single use.
- 4Context mix
Attention looks at nearby tokens together.
- 5Next token
The model scores what should come next.
- 6Decode
IDs turn back into readable text.
EXAMPLE — See it in action
Let's see how a real sentence is tokenized (tokens may vary by model):
Note: Actual tokens and IDs depend on the tokenizer (e.g., GPT, Llama, etc.).
Key takeaway
Send a short-lived protected token link that signs the user in. Rate limit requests.