@Eroder, the Instagram API requires a CLIENT ID and a SECRET CLIENT that are provided at the time you create an application. To create an application, you need to fill in the following form: http://instagram.com/developer/clients/register/
When registering your app you will have in hand your CLIENT ID and a SECRET CLIENT, from this just carry out your requests.
There are vendors like instafeedjs that help you in this, example code:
<script type="text/javascript">
var userFeed = new Instafeed({
get: 'user',
userId: YOUR_USER_ID,
accessToken: 'YOUR_ACCESS_TOKEN'
});
userFeed.run();
</script>
You will get access to recent media as you want if the user does not have a private profile, so you do not need the user to pass the user’s ID and PASSWORD to you.
There is way yes, warns the user that he has to have a safe password on Instagram, the computer well protected and Wordpress well configured. If what you want needs password, there’s not much way to get anything without it...
– brasofilo
Simple, tells the user that if he wants to have this functionality, he will need to follow the rules that the creators of this functionality required, if he does not want to follow these rules, he will not be able to make use, which is 8 or 80, has no middle ground for him
– Tafarel Chicotti
Don’t have an Openid scheme? Or application key, like the Facebook apps?
– Oralista de Sistemas