During an intense shower thought train. I began to think about a hypothetical world where passwords were no longer a safe way of protecting systems. **Edit**: W̶h̶e̶t̶h̶e̶r̶ ̶c̶o̶m̶p̶u̶t̶e̶r̶s̶ ̶b̶e̶c̶a̶m̶e̶ ̶t̶o̶o̶ ̶p̶o̶w̶e̶r̶f̶u̶l̶ ̶a̶n̶d̶ ̶c̶o̶u̶l̶d̶ ̶b̶r̶u̶t̶e̶ ̶f̶o̶r̶c̶e̶ ̶a̶n̶y̶t̶h̶i̶n̶g̶,̶ ̶o̶r̶ ̶s̶o̶m̶e̶ ̶m̶a̶g̶i̶c̶ ̶p̶r̶o̶g̶r̶a̶m̶ ̶w̶a̶s̶ ̶r̶e̶l̶e̶a̶s̶e̶d̶ ̶d̶o̶e̶s̶n̶'̶t̶ ̶m̶a̶t̶t̶e̶r̶ ̶h̶e̶r̶e̶.̶ (Let's not assume anything other than the 'fact' that conventional passwords cannot be used to secure systems)

If passwords where out of the picture, how would the general public go about securing their computers and online accounts?