yes
yes
On a 1995 Ford Explorer : No ( at least my 1995 Ford Explorer XLT doesn't )
1998 Explorer uses a PATS II system with a transponder in the keyhead.
you can copy any key, but, if the key has a "chip" in it you will have to take it to the dealer to get a copy made. I drive a 2004 F-150 and it has a chip in it.
YES
No. So you can easily get a copy of it.
No it does not if it is a s10 blazer
yes but if the key has a chip in it then you will have to go to a dealership for tehm to program you a new one.
Yes every F-150 since 1999 has a transponder "chip" in the key. You can get replacements or extras from a locksmith or your local dealer.
YesYes
remove battery cable