first, before you scan a code, you need to ask someone to sign it (hence the 吗). Also, you can think of the two lines above the 口 radical as scanning it. The 口 radical you can think of as the QR code itself.
this character looks like 吗 with an extra line. Sometimes when you want to log into a website, they ask you a *question* like “when is your mother’s birthday” and the answer you set for it is the code.
first, before you scan a code, you need to ask someone to sign it (hence the 吗). Also, you can think of the two lines above the 口 radical as scanning it. The 口 radical you can think of as the QR code itself.
this character looks like 吗 with an extra line. Sometimes when you want to log into a website, they ask you a *question* like “when is your mother’s birthday” and the answer you set for it is the code.