That's no real magic. You have to tell the website what picture to display for a given html-request. So if "someone" says it will be a jack of hearts, you tell the program running on the server to display a jack of hearts if that particular someone requests that page.
That's comparable with a personalised ad. If you and I visit the same page, it is programmed to look at your and my viewing history, So I see an ad for a red chair, and you see an ad for whatever you searched for recently.
The only issue is how to identify that "someone". You can hardly ask the participant to tell you his IP-address. So it must be based on timing and/or on something he enters himself, like his name.
I wish to update a single image remotely from a pool of possibly hundreds of options such as playing cards, dice numbers, quotes etc without changing any other part of the site. This needs to be a quick and painless proceedure and done from my Android phone the coding for which I already have an idea about.
Basically, I am a magician and want to be able to have someone select a card etc and go to a website where their card/selection is now being displayed. Also, if that image can revert back to a default image once it has been viewed it would be even better.
I have an idea how it could be done but my idea is pretty hefty on Android coding which I'd rather avoid!
I did think of uploading an image of every possible choice to a folder and passing a variable to the site which would then display said image but this seems a bit top heavy...imho anyway!!
I have zero Java experience so not really into designing an applet for this unless something is already available!!
If you have any ideas or pointers I would be grateful.
Thanks in advance...