digital one-time pad

https://acornmetric.com/s/4Bbk6zT3qakDeZ8vo-Q-q

I keep a small notebook with random numbers for encrypting my private messages using a digital one-time pad. It's like a secret codebook that works perfectly as long as I never reuse a page. Each pad has unique numbers I combine with my text, and my friend has the same pad to decode it. The system is mathematically unbreakable, but managing all those fresh pads gets tricky.