Yes.
The Future Is Unknown was created on 2004-03-28.
It is correct to use "which is" when talking about a singular future unknown situation or option. If referring to multiple future unknown situations or options, it is correct to use "which are."
Yes
It is unknown what the future holds considering technology.
That is unknown. What it happen in the future is not known.
Surveys are typically recorded and stored in databases or online platforms for future reference.
Unknown
Usually fingerprints are taken but in the future we may have retina scanners.
The future is unknown.
If yours show up on a murder weapon, they may indicate that your particular future involves an orange jumpsuit and getting shanked in the showers.But in general, there's no relationship between fingerprints and "the future".
Police take people's fingerprints to create a record in case they commit a crime in the future, as fingerprints are unique to each individual and can be used for identification purposes. Fingerprints help law enforcement link individuals to past criminal activity and aid in solving cases.
It is unknown if computers will replace books in the future.