I'm very skeptical of the third. A human brain contains ~10^10 neurons and ~10^14 synapses -- which would be hard to infer from ~10^5 photos/screenshots, esp. considering that they don't convey that much information about your brain structure. DNA and comprehensive brain scans are better, but I guess that getting brain scans with required precision isn't quite easy.
Cryonics, at least, might work.
DNA and brain scans are far from perfect -- you will only get someone "you-ish". In the absence of a solution, you can at least get a bit more you-ness cheaply when the opportunity presents itself. A sufficiently powerful simulation could take all the possible yous indicated by DNA and scans, and see which yous are consistent with the sequences you have saved through screen shots and ect.
It's not perfect, but it should be a little bit better.
Even better would be if you did something more complex and less externally guided than web-browsing... write a book, a blog, or a song. Also, save your LessWrong username in that file!
This thread is for asking the rationalist community for practical advice. It's inspired by the stupid questions series, but with an explicit focus on instrumental rationality.
Questions ranging from easy ("this is probably trivial for half the people on this site") to hard ("maybe someone here has a good answer, but probably not") are welcome. However, please stick to problems that you actually face or anticipate facing soon, not hypotheticals.
As with the stupid questions thread, don't be shy, everyone has holes in their knowledge, though the fewer and the smaller we can make them, the better, and please be respectful of other people's admitting ignorance and don't mock them for it, as they're doing a noble thing.
(See also the Boring Advice Repository)