As delivered, both signed and un signed versions are included.
Signing is unusual.
A signed applet can do almost anything a normal programme can do. An unsigned applet is heavily restricted. We pay a lot extra for the signing certificates, but we do not pass this price on to you - the signed applets are in the same price scales as the rest of our products. And you get access to technology that is well ahead of the competition. And you get the unsigned versions as well in case you don't like the signing.