user3029: Can you use non-standard characters to create a bitcoin brain wallet? Ex. Chinese characters, ascii characters using the numberpad with ALT key.
Is there downsides to this?

user12983: In short words: yes.
But you should know the algorithm how brainwallets are generated. Nobody guarantees that brainwallets on different services are generated with the same algorithm.

3029: <p>Can you use non-standard characters to create a bitcoin brain wallet? Ex. Chinese characters, ascii characters using the numberpad with ALT key.</p>

<p>Is there downsides to this?</p>
 12983: <p>In short words: yes.</p>

<p>But you should know the algorithm how brainwallets are generated. Nobody guarantees that brainwallets on different services are generated with the same algorithm.</p>
