cassette tapes were the only medium of listening to personal audio till the time CDs hit the market for a short span of time only to be replaced by iPods and smartphones. The medium may be "dead" when it comes to daily consumer storage tech, Sony has gone ahead and developed a new way of revitalizing the magnetic tape technology.

Sony presented the new cassette tape format at International Magnetics Conference (Intermag) in Europe last week. The tape comes with much more storage capacity than the tapes we once knew. It is capable of holding 148GB per square inch which is it a new record holder for the highest storage density in the magnetic tape medium.

Magnetic tapes have been the most preferred way of backing up large amounts of data since the 90s. Even though, hard drives have replaced magnetic tape as the preffered way of storage for consumers. But the reality is that the magnetic tapes are drives are still used by companies for mass data backup.
A new cassette created by Sony capable of holding 185TB of storage sounds mammoth when compared to 50GB Blu-Ray discs and 1TB PC hard drives.

How Sony did it
The Japanese electronics giant utilized and enhanced a technology know as "sputter deposition" which creates layers of magnetic crystals by firing argon ions at a polymer film substrate. Creator of Walkman says that the cassette is more of an experiment than a product for consumer space. But Sony is looking to commercialize the product and launch it in the market in the near future.
Surprisingly, storage tape shipments grew 13% two years ago and increased to 26% growth last year. The only issue that magnetic tape storage media faces is its read and write times which is very slow compared to other mainstream storage mediums. But when it comes to storage capacity, such mediums don't even compete against the tape storage - the sole reason why big corporations still use it.