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This was a huge issue for some of the software I maintain. The link explains the problem really well. User agent sniffing was the only option. We have a lot

This was a huge issue for some of the software I maintain. The link explains the problem really well. User agent sniffing was the only option. We have a lot of end users on older iPads that can't upgrade to a newer browser. These users are the general public, so you can't force them to upgrade devices. We will have to continue to do the user agent sniffing for years to come.

tuukkah 4y ago
From the link: > While the double cookie approach is what is recommended by Google, the ASP.NET team concluded otherwise - they found that going with a user-agent sniffing approach would be the safer approach. User-agent sniffing is hard to get right. It's hard to cover all the relevant browsers, and it's hard to do so in a way where you can be reasonably sure it won't break in user-agents of the future. But when someone gets it right, that becomes a readily copiable solution that anyone can use.