<story><title>Ask HN: Mobile devs who added Apple Sign In, what conversion changes?</title><text>Curious if adding apple sign in substantially affected conversion rate for mobile apps, thanks.</text></story><parent_chain><item><author>shadowgoat</author><text>Haven’t done anything with Apple sign in, but I worked with a lot of other providers before. If you have multiple options, users might forget what service they used. This becomes an even bigger problem if the paid for a service with a different provider and can’t find their purchase. If you do use something like this, only having one provider (only Apple) makes things less confusing.</text></item></parent_chain><comment><author>m0dest</author><text>I worked on the design and rollout of multiple sign in providers on a popular app.  There are best practices that avoid these issues (users forgetting which service they used), but they are rarely implemented.&lt;p&gt;The trick is to be very forgiving:  If a user tries to sign in using provider X, and we discover an email address conflict with an account that uses provider Y, we would simply ask users to confirm by clicking a button to sign in with provider Y.  From that point forward, both provider X and provider Y can be used to sign into the account.&lt;p&gt;So many apps miss the importance of this and cut corners by only allowing an account to be associated with 1 sign-in provider, or forcing users to create passwords for these accounts, or differentiating between login and signup.</text></comment>
<story><title>Ask HN: Mobile devs who added Apple Sign In, what conversion changes?</title><text>Curious if adding apple sign in substantially affected conversion rate for mobile apps, thanks.</text></story><parent_chain><item><author>shadowgoat</author><text>Haven’t done anything with Apple sign in, but I worked with a lot of other providers before. If you have multiple options, users might forget what service they used. This becomes an even bigger problem if the paid for a service with a different provider and can’t find their purchase. If you do use something like this, only having one provider (only Apple) makes things less confusing.</text></item></parent_chain><comment><author>cmroanirgo</author><text>This. I&amp;#x27;m not a big user of SSO in general, but on the few sites that I did use it, I&amp;#x27;d forget whether I used SSO or not. Also, using SSO locks you into using that vendor. I&amp;#x27;ve a couple of accounts that I&amp;#x27;d like to change to normal uname&amp;#x2F;pwd but am locked into the SSO vendor (which I&amp;#x27;m hoping to move away from)</text></comment>