Book 1 of the Tuttle series "250 Essential Kanji" has the oddity ( in my edition ) of not only having no Unicode value for a kanji but also no Tuttle flashcard number.
Take page 121, for example.
The kanji are entries 139, 140 and 141.
These are
証 確 and
認 .
Their Tuttle flashcard numbers are 754, 805 and 978.
If you are interested in an Android app to accompany the book, drop a note at info AT aule-browser.com and I'll convert some Curl RIA desktop code into Curl CAEDE code and we'll have that app.
The app would show you that these kanji are
証 ショウ / あかし 8A3C
確 カク·コウ / たし.か·たし.かめる 78BA
認 ニン / みと.める·したた.める 8A8D
If you know the 4-character Unicode utf-16 value then I have a simple app that gives you a version of that kanji that you can then cut-n-paste into a web page, a URL address or a Word document – or into a Find field in a Japanese page that is encoded in EUC or Shift or which ever JIS or other encoding is confounding your search. One ring of code to bind them all.
Btw, their Kodansha Essential Kanji entries are 1672, 1409 and 1690.
And which two of the above kanji form the verb
kakuninsuru ? Sooo desu ne !