Google Wallet wants to know with my API integration, do I want....I copied their pop up info so I could show you what they are asking for. So, do I want unsigned, or signed encrypted? BELOW is what I copied in regards to the question they are asking me.
Digital signatures allow Google to authenticate the shopping cart you send and verify that your cart hasn't been tampered with during transmission. Google will reject unsigned carts by default unless you edit your account security settings to accept unsigned carts.
If you choose not to have Google reject carts without digital signatures, we recommend that you review the item prices in the orders you receive before processing them to ensure their validity.
To change your settings to accept unsigned carts:
Sign in to your account.
Click the Settings tab.
Under 'Shopping cart post security,' uncheck the box next to â€˜My company will only post digitally signed carts.â€™