## Hex (Node.js)
```js
import crypto from 'node:crypto';
crypto.randomBytes(30).toString('hex');
// Result: '15ae62c35314d260b6b685a77f3487c9960a92e8a414baafcc1ba4bb8b78'
```
## Hex (browser)
```js
Math.random().toString(36).substring(2, 15);
// Result: nc7nrtya9xc
```