"in handwriting" is a perfectly correct and usable phrase in written English.
For example, you can use it to describe a document or letter: "The contract was written in handwriting."
Seeking leads, officials have brought in handwriting analysts to examine the letters, subpoenaed information from laboratories around the country and followed countless other avenues of inquiry.
A rounded form also appears in handwriting.
In Handwriting (1998) Ondaatje returned to his birthplace, Sri Lanka.
Through the day, several other names were added in handwriting.
Such handwritten CAPTCHAs exploit the differential in handwriting reading proficiency between humans and machines.
Printing stabilizes texts but also leads to a long-term decline in handwriting.
Anything in writing can always be scratched out and written in handwriting versus printing.
Other indications include subtle changes in handwriting, difficulty learning new things, and small problems with movement.
When they arrive, the pads will say "ALERT" in handwriting that looks like a ransom note.
In handwriting there is a vital head-hand-page connection that a keyboard and computer removes.
Her book "Sexual Deviations As Seen in Handwriting" was published earlier this year.
